diff --git a/src/strands/models/_validation.py b/src/strands/models/_validation.py
index 1e82bca73..9d4d8b178 100644
--- a/src/strands/models/_validation.py
+++ b/src/strands/models/_validation.py
@@ -6,6 +6,7 @@ from typing import Any
 
 from typing_extensions import get_type_hints
 
+from ..types.content import ContentBlock
 from ..types.tools import ToolChoice
 
 
@@ -41,3 +42,23 @@ def warn_on_tool_choice_not_supported(tool_choice: ToolChoice | None) -> None:
             "A ToolChoice was provided to this provider but is not supported and will be ignored",
             stacklevel=4,
         )
+
+
+def _has_location_source(content: ContentBlock) -> bool:
+    """Check if a content block contains a location source.
+
+    Providers need to explicitly define an implementation to support content locations.
+
+    Args:
+        content: Content block to check.
+
+    Returns:
+        True if the content block contains an location source, False otherwise.
+    """
+    if "image" in content:
+        return "location" in content["image"].get("source", {})
+    if "document" in content:
+        return "location" in content["document"].get("source", {})
+    if "video" in content:
+        return "location" in content["video"].get("source", {})
+    return False
diff --git a/src/strands/models/anthropic.py b/src/strands/models/anthropic.py
index 535c820ee..b5f6fcf91 100644
--- a/src/strands/models/anthropic.py
+++ b/src/strands/models/anthropic.py
@@ -20,7 +20,7 @@ from ..types.content import ContentBlock, Messages
 from ..types.exceptions import ContextWindowOverflowException, ModelThrottledException
 from ..types.streaming import StreamEvent
 from ..types.tools import ToolChoice, ToolChoiceToolDict, ToolSpec
-from ._validation import validate_config_keys
+from ._validation import _has_location_source, validate_config_keys
 from .model import Model
 
 logger = logging.getLogger(__name__)
@@ -189,6 +189,11 @@ class AnthropicModel(Model):
                     formatted_contents[-1]["cache_control"] = {"type": "ephemeral"}
                     continue
 
+                # Check for location sources in image, document, or video content
+                if _has_location_source(content):
+                    logger.warning("Location sources are not supported by Anthropic | skipping content block")
+                    continue
+
                 formatted_contents.append(self._format_request_message_content(content))
 
             if formatted_contents:
diff --git a/src/strands/models/bedrock.py b/src/strands/models/bedrock.py
index b053b70fb..596936e6f 100644
--- a/src/strands/models/bedrock.py
+++ b/src/strands/models/bedrock.py
@@ -472,7 +472,7 @@ class BedrockModel(Model):
                 formatted_document_s3["bucketOwner"] = s3_location["bucketOwner"]
             return {"s3Location": formatted_document_s3}
         else:
-            logger.warning("Non s3 location sources are not supported by Bedrock, skipping content block")
+            logger.warning("Non s3 location sources are not supported by Bedrock | skipping content block")
             return None
 
     def _format_request_message_content(self, content: ContentBlock) -> dict[str, Any] | None:
diff --git a/src/strands/models/gemini.py b/src/strands/models/gemini.py
index 192a363d3..6a6535999 100644
--- a/src/strands/models/gemini.py
+++ b/src/strands/models/gemini.py
@@ -18,7 +18,7 @@ from ..types.content import ContentBlock, Messages
 from ..types.exceptions import ContextWindowOverflowException, ModelThrottledException
 from ..types.streaming import StreamEvent
 from ..types.tools import ToolChoice, ToolSpec
-from ._validation import validate_config_keys
+from ._validation import _has_location_source, validate_config_keys
 from .model import Model
 
 logger = logging.getLogger(__name__)
@@ -229,15 +229,24 @@ class GeminiModel(Model):
         # available in tool result blocks, hence the mapping.
         tool_use_id_to_name: dict[str, str] = {}
 
-        return [
-            genai.types.Content(
-                parts=[
-                    self._format_request_content_part(content, tool_use_id_to_name) for content in message["content"]
-                ],
-                role="user" if message["role"] == "user" else "model",
+        contents = []
+        for message in messages:
+            parts = []
+            for content in message["content"]:
+                # Check for location sources and skip with warning
+                if _has_location_source(content):
+                    logger.warning("Location sources are not supported by Gemini | skipping content block")
+                    continue
+                parts.append(self._format_request_content_part(content, tool_use_id_to_name))
+
+            contents.append(
+                genai.types.Content(
+                    parts=parts,
+                    role="user" if message["role"] == "user" else "model",
+                )
             )
-            for message in messages
-        ]
+
+        return contents
 
     def _format_request_tools(self, tool_specs: list[ToolSpec] | None) -> list[genai.types.Tool | Any]:
         """Format tool specs into Gemini tools.
diff --git a/src/strands/models/llamaapi.py b/src/strands/models/llamaapi.py
index ce0367bf5..b1ed4563a 100644
--- a/src/strands/models/llamaapi.py
+++ b/src/strands/models/llamaapi.py
@@ -20,7 +20,7 @@ from ..types.content import ContentBlock, Messages
 from ..types.exceptions import ModelThrottledException
 from ..types.streaming import StreamEvent, Usage
 from ..types.tools import ToolChoice, ToolResult, ToolSpec, ToolUse
-from ._validation import validate_config_keys, warn_on_tool_choice_not_supported
+from ._validation import _has_location_source, validate_config_keys, warn_on_tool_choice_not_supported
 from .model import Model
 
 logger = logging.getLogger(__name__)
@@ -176,12 +176,18 @@ class LlamaAPIModel(Model):
         for message in messages:
             contents = message["content"]
 
+            # Filter out location sources and unsupported block types
+            filtered_contents = []
+            for content in contents:
+                if any(block_type in content for block_type in ["toolResult", "toolUse"]):
+                    continue
+                if _has_location_source(content):
+                    logger.warning("Location sources are not supported by LlamaAPI | skipping content block")
+                    continue
+                filtered_contents.append(content)
+
             formatted_contents: list[dict[str, Any]] | dict[str, Any] | str = ""
-            formatted_contents = [
-                self._format_request_message_content(content)
-                for content in contents
-                if not any(block_type in content for block_type in ["toolResult", "toolUse"])
-            ]
+            formatted_contents = [self._format_request_message_content(content) for content in filtered_contents]
             formatted_tool_calls = [
                 self._format_request_message_tool_call(content["toolUse"])
                 for content in contents
diff --git a/src/strands/models/llamacpp.py b/src/strands/models/llamacpp.py
index ca838f3d7..c52509816 100644
--- a/src/strands/models/llamacpp.py
+++ b/src/strands/models/llamacpp.py
@@ -30,7 +30,7 @@ from ..types.content import ContentBlock, Messages
 from ..types.exceptions import ContextWindowOverflowException, ModelThrottledException
 from ..types.streaming import StreamEvent
 from ..types.tools import ToolChoice, ToolSpec
-from ._validation import validate_config_keys, warn_on_tool_choice_not_supported
+from ._validation import _has_location_source, validate_config_keys, warn_on_tool_choice_not_supported
 from .model import Model
 
 logger = logging.getLogger(__name__)
@@ -299,11 +299,17 @@ class LlamaCppModel(Model):
         for message in messages:
             contents = message["content"]
 
-            formatted_contents = [
-                self._format_message_content(content)
-                for content in contents
-                if not any(block_type in content for block_type in ["toolResult", "toolUse"])
-            ]
+            # Filter out location sources and unsupported block types
+            filtered_contents = []
+            for content in contents:
+                if any(block_type in content for block_type in ["toolResult", "toolUse"]):
+                    continue
+                if _has_location_source(content):
+                    logger.warning("Location sources are not supported by llama.cpp | skipping content block")
+                    continue
+                filtered_contents.append(content)
+
+            formatted_contents = [self._format_message_content(content) for content in filtered_contents]
             formatted_tool_calls = [
                 self._format_tool_call(
                     {
diff --git a/src/strands/models/mistral.py b/src/strands/models/mistral.py
index 4ec77ccfe..504e81c92 100644
--- a/src/strands/models/mistral.py
+++ b/src/strands/models/mistral.py
@@ -17,7 +17,7 @@ from ..types.content import ContentBlock, Messages
 from ..types.exceptions import ModelThrottledException
 from ..types.streaming import StopReason, StreamEvent
 from ..types.tools import ToolChoice, ToolResult, ToolSpec, ToolUse
-from ._validation import validate_config_keys, warn_on_tool_choice_not_supported
+from ._validation import _has_location_source, validate_config_keys, warn_on_tool_choice_not_supported
 from .model import Model
 
 logger = logging.getLogger(__name__)
@@ -212,6 +212,11 @@ class MistralModel(Model):
             tool_messages: list[dict[str, Any]] = []
 
             for content in contents:
+                # Check for location sources and skip with warning
+                if _has_location_source(content):
+                    logger.warning("Location sources are not supported by Mistral | skipping content block")
+                    continue
+
                 if "text" in content:
                     formatted_content = self._format_request_message_content(content)
                     if isinstance(formatted_content, str):
diff --git a/src/strands/models/ollama.py b/src/strands/models/ollama.py
index 8d72aa534..68aba59d4 100644
--- a/src/strands/models/ollama.py
+++ b/src/strands/models/ollama.py
@@ -15,7 +15,7 @@ from typing_extensions import TypedDict, Unpack, override
 from ..types.content import ContentBlock, Messages
 from ..types.streaming import StopReason, StreamEvent
 from ..types.tools import ToolChoice, ToolSpec
-from ._validation import validate_config_keys, warn_on_tool_choice_not_supported
+from ._validation import _has_location_source, validate_config_keys, warn_on_tool_choice_not_supported
 from .model import Model
 
 logger = logging.getLogger(__name__)
@@ -160,12 +160,16 @@ class OllamaModel(Model):
         """
         system_message = [{"role": "system", "content": system_prompt}] if system_prompt else []
 
-        return system_message + [
-            formatted_message
-            for message in messages
-            for content in message["content"]
-            for formatted_message in self._format_request_message_contents(message["role"], content)
-        ]
+        formatted_messages = []
+        for message in messages:
+            for content in message["content"]:
+                # Check for location sources and skip with warning
+                if _has_location_source(content):
+                    logger.warning("Location sources are not supported by Ollama | skipping content block")
+                    continue
+                formatted_messages.extend(self._format_request_message_contents(message["role"], content))
+
+        return system_message + formatted_messages
 
     def format_request(
         self, messages: Messages, tool_specs: list[ToolSpec] | None = None, system_prompt: str | None = None
diff --git a/src/strands/models/openai.py b/src/strands/models/openai.py
index d9266212b..51e98c8c2 100644
--- a/src/strands/models/openai.py
+++ b/src/strands/models/openai.py
@@ -20,7 +20,7 @@ from ..types.content import ContentBlock, Messages, SystemContentBlock
 from ..types.exceptions import ContextWindowOverflowException, ModelThrottledException
 from ..types.streaming import StreamEvent
 from ..types.tools import ToolChoice, ToolResult, ToolSpec, ToolUse
-from ._validation import validate_config_keys
+from ._validation import _has_location_source, validate_config_keys
 from .model import Model
 
 logger = logging.getLogger(__name__)
@@ -338,11 +338,17 @@ class OpenAIModel(Model):
                     "reasoningContent is not supported in multi-turn conversations with the Chat Completions API."
                 )
 
-            formatted_contents = [
-                cls.format_request_message_content(content)
-                for content in contents
-                if not any(block_type in content for block_type in ["toolResult", "toolUse", "reasoningContent"])
-            ]
+            # Filter out content blocks that shouldn't be formatted
+            filtered_contents = []
+            for content in contents:
+                if any(block_type in content for block_type in ["toolResult", "toolUse", "reasoningContent"]):
+                    continue
+                if _has_location_source(content):
+                    logger.warning("Location sources are not supported by OpenAI | skipping content block")
+                    continue
+                filtered_contents.append(content)
+
+            formatted_contents = [cls.format_request_message_content(content) for content in filtered_contents]
             formatted_tool_calls = [
                 cls.format_request_message_tool_call(content["toolUse"]) for content in contents if "toolUse" in content
             ]
diff --git a/src/strands/models/writer.py b/src/strands/models/writer.py
index f306d649b..94774b363 100644
--- a/src/strands/models/writer.py
+++ b/src/strands/models/writer.py
@@ -18,7 +18,7 @@ from ..types.content import ContentBlock, Messages
 from ..types.exceptions import ModelThrottledException
 from ..types.streaming import StreamEvent
 from ..types.tools import ToolChoice, ToolResult, ToolSpec, ToolUse
-from ._validation import validate_config_keys, warn_on_tool_choice_not_supported
+from ._validation import _has_location_source, validate_config_keys, warn_on_tool_choice_not_supported
 from .model import Model
 
 logger = logging.getLogger(__name__)
@@ -218,11 +218,21 @@ class WriterModel(Model):
         for message in messages:
             contents = message["content"]
 
+            # Filter out location sources
+            filtered_contents = []
+            for content in contents:
+                if _has_location_source(content):
+                    logger.warning("Location sources are not supported by Writer | skipping content block")
+                    continue
+                filtered_contents.append(content)
+
             # Only palmyra V5 support multiple content. Other models support only '{"content": "text_content"}'
             if self.get_config().get("model_id", "") == "palmyra-x5":
-                formatted_contents: str | list[dict[str, Any]] = self._format_request_message_contents_vision(contents)
+                formatted_contents: str | list[dict[str, Any]] = self._format_request_message_contents_vision(
+                    filtered_contents
+                )
             else:
-                formatted_contents = self._format_request_message_contents(contents)
+                formatted_contents = self._format_request_message_contents(filtered_contents)
 
             formatted_tool_calls = [
                 self._format_request_message_tool_call(content["toolUse"])
diff --git a/tests/strands/models/test__validation.py b/tests/strands/models/test__validation.py
new file mode 100644
index 000000000..e8a451494
--- /dev/null
+++ b/tests/strands/models/test__validation.py
@@ -0,0 +1,67 @@
+"""Tests for model validation helper functions."""
+
+from strands.models._validation import _has_location_source
+
+
+class TestHasLocationSource:
+    """Tests for _has_location_source helper function."""
+
+    def test_image_with_location_source(self):
+        """Test detection of location source in image content."""
+        content = {"image": {"source": {"location": {"type": "s3", "uri": "s3://bucket/key"}}}}
+        assert _has_location_source(content)
+
+    def test_image_with_bytes_source(self):
+        """Test that bytes source is not detected as location."""
+        content = {"image": {"source": {"bytes": b"data"}}}
+        assert not _has_location_source(content)
+
+    def test_document_with_location_source(self):
+        """Test detection of location source in document content."""
+        content = {"document": {"source": {"location": {"type": "s3", "uri": "s3://bucket/key"}}}}
+        assert _has_location_source(content)
+
+    def test_document_with_bytes_source(self):
+        """Test that bytes source is not detected as location."""
+        content = {"document": {"source": {"bytes": b"data"}}}
+        assert not _has_location_source(content)
+
+    def test_video_with_location_source(self):
+        """Test detection of location source in video content."""
+        content = {"video": {"source": {"location": {"type": "s3", "uri": "s3://bucket/key"}}}}
+        assert _has_location_source(content)
+
+    def test_video_with_bytes_source(self):
+        """Test that bytes source is not detected as location."""
+        content = {"video": {"source": {"bytes": b"data"}}}
+        assert not _has_location_source(content)
+
+    def test_text_content(self):
+        """Test that text content is not detected as location source."""
+        content = {"text": "hello"}
+        assert not _has_location_source(content)
+
+    def test_tool_use_content(self):
+        """Test that toolUse content is not detected as location source."""
+        content = {"toolUse": {"name": "test", "input": {}, "toolUseId": "123"}}
+        assert not _has_location_source(content)
+
+    def test_tool_result_content(self):
+        """Test that toolResult content is not detected as location source."""
+        content = {"toolResult": {"toolUseId": "123", "content": [{"text": "result"}]}}
+        assert not _has_location_source(content)
+
+    def test_image_without_source(self):
+        """Test that image without source is not detected as location."""
+        content = {"image": {"format": "png"}}
+        assert not _has_location_source(content)
+
+    def test_document_without_source(self):
+        """Test that document without source is not detected as location."""
+        content = {"document": {"format": "pdf", "name": "test.pdf"}}
+        assert not _has_location_source(content)
+
+    def test_video_without_source(self):
+        """Test that video without source is not detected as location."""
+        content = {"video": {"format": "mp4"}}
+        assert not _has_location_source(content)
diff --git a/tests/strands/models/test_anthropic.py b/tests/strands/models/test_anthropic.py
index 74bbb8d45..c5aff8062 100644
--- a/tests/strands/models/test_anthropic.py
+++ b/tests/strands/models/test_anthropic.py
@@ -1,3 +1,4 @@
+import logging
 import unittest.mock
 
 import anthropic
@@ -866,3 +867,69 @@ def test_tool_choice_none_no_warning(model, messages, captured_warnings):
     model.format_request(messages, tool_choice=None)
 
     assert len(captured_warnings) == 0
+
+
+def test_format_request_filters_s3_source_image(model, model_id, max_tokens, caplog):
+    """Test that images with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.anthropic")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "look at this image"},
+                {
+                    "image": {
+                        "format": "png",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/image.png"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    tru_request = model.format_request(messages)
+
+    # Image with S3 source should be filtered, text should remain
+    exp_messages = [
+        {"role": "user", "content": [{"type": "text", "text": "look at this image"}]},
+    ]
+    assert tru_request["messages"] == exp_messages
+    assert "Location sources are not supported by Anthropic" in caplog.text
+
+
+def test_format_request_filters_location_source_document(model, model_id, max_tokens, caplog):
+    """Test that documents with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.anthropic")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "analyze this document"},
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    tru_request = model.format_request(messages)
+
+    # Document with S3 source should be filtered, text should remain
+    exp_messages = [
+        {"role": "user", "content": [{"type": "text", "text": "analyze this document"}]},
+    ]
+    assert tru_request["messages"] == exp_messages
+    assert "Location sources are not supported by Anthropic" in caplog.text
diff --git a/tests/strands/models/test_bedrock.py b/tests/strands/models/test_bedrock.py
index 761434258..aac791214 100644
--- a/tests/strands/models/test_bedrock.py
+++ b/tests/strands/models/test_bedrock.py
@@ -1924,7 +1924,7 @@ def test_format_request_unsupported_location(model, caplog):
 
     formatted_request = model._format_request(messages)
     assert len(formatted_request["messages"][0]["content"]) == 1
-    assert "Non s3 location sources are not supported by Bedrock, skipping content block" in caplog.text
+    assert "Non s3 location sources are not supported by Bedrock | skipping content block" in caplog.text
 
 
 def test_format_request_video_s3_location(model, model_id):
diff --git a/tests/strands/models/test_gemini.py b/tests/strands/models/test_gemini.py
index 86ab2fea5..d62c5a7c8 100644
--- a/tests/strands/models/test_gemini.py
+++ b/tests/strands/models/test_gemini.py
@@ -934,3 +934,67 @@ def test_init_with_both_client_and_client_args_raises_error():
 
     with pytest.raises(ValueError, match="Only one of 'client' or 'client_args' should be provided"):
         GeminiModel(client=mock_client, client_args={"api_key": "test"}, model_id="test-model")
+
+
+def test_format_request_filters_s3_source_image(model, caplog):
+    """Test that images with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.gemini")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "look at this image"},
+                {
+                    "image": {
+                        "format": "png",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/image.png"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model._format_request(messages, None, None, None)
+
+    # Image with S3 source should be filtered, text should remain
+    formatted_content = request["contents"][0]["parts"]
+    assert len(formatted_content) == 1
+    assert "text" in formatted_content[0]
+    assert "Location sources are not supported by Gemini" in caplog.text
+
+
+def test_format_request_filters_location_source_document(model, caplog):
+    """Test that documents with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.gemini")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "analyze this document"},
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model._format_request(messages, None, None, None)
+
+    # Document with S3 source should be filtered, text should remain
+    formatted_content = request["contents"][0]["parts"]
+    assert len(formatted_content) == 1
+    assert "text" in formatted_content[0]
+    assert "Location sources are not supported by Gemini" in caplog.text
diff --git a/tests/strands/models/test_llamaapi.py b/tests/strands/models/test_llamaapi.py
index a6bbf5673..2bf12d055 100644
--- a/tests/strands/models/test_llamaapi.py
+++ b/tests/strands/models/test_llamaapi.py
@@ -1,4 +1,5 @@
 # Copyright (c) Meta Platforms, Inc. and affiliates
+import logging
 import unittest.mock
 
 import pytest
@@ -414,3 +415,69 @@ async def test_tool_choice_none_no_warning(model, messages, captured_warnings, a
         await alist(response)
 
     assert len(captured_warnings) == 0
+
+
+def test_format_request_filters_s3_source_image(model, caplog):
+    """Test that images with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.llamaapi")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "look at this image"},
+                {
+                    "image": {
+                        "format": "png",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/image.png"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model.format_request(messages)
+
+    # Image with S3 source should be filtered, text should remain
+    formatted_messages = request["messages"]
+    user_content = formatted_messages[0]["content"]
+    assert len(user_content) == 1
+    assert user_content[0]["type"] == "text"
+    assert "Location sources are not supported by LlamaAPI" in caplog.text
+
+
+def test_format_request_filters_location_source_document(model, caplog):
+    """Test that documents with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.llamaapi")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "analyze this document"},
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model.format_request(messages)
+
+    # Document with S3 source should be filtered, text should remain
+    formatted_messages = request["messages"]
+    user_content = formatted_messages[0]["content"]
+    assert len(user_content) == 1
+    assert user_content[0]["type"] == "text"
+    assert "Location sources are not supported by LlamaAPI" in caplog.text
diff --git a/tests/strands/models/test_llamacpp.py b/tests/strands/models/test_llamacpp.py
index e5b2614c0..fa784de5c 100644
--- a/tests/strands/models/test_llamacpp.py
+++ b/tests/strands/models/test_llamacpp.py
@@ -2,6 +2,7 @@
 
 import base64
 import json
+import logging
 from unittest.mock import AsyncMock, patch
 
 import httpx
@@ -637,3 +638,71 @@ def test_format_messages_with_mixed_content() -> None:
     assert result[0]["content"][2]["type"] == "image_url"
     assert "image_url" in result[0]["content"][2]
     assert result[0]["content"][2]["image_url"]["url"].startswith("data:image/jpeg;base64,")
+
+
+def test_format_request_filters_s3_source_image(caplog) -> None:
+    """Test that images with Location sources are filtered out with warning."""
+    model = LlamaCppModel()
+    caplog.set_level(logging.WARNING, logger="strands.models.llamacpp")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "look at this image"},
+                {
+                    "image": {
+                        "format": "png",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/image.png"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model._format_request(messages)
+
+    # Image with S3 source should be filtered, text should remain
+    formatted_messages = request["messages"]
+    user_content = formatted_messages[0]["content"]
+    assert len(user_content) == 1
+    assert user_content[0]["type"] == "text"
+    assert "Location sources are not supported by llama.cpp" in caplog.text
+
+
+def test_format_request_filters_location_source_document(caplog) -> None:
+    """Test that documents with Location sources are filtered out with warning."""
+    model = LlamaCppModel()
+    caplog.set_level(logging.WARNING, logger="strands.models.llamacpp")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "analyze this document"},
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model._format_request(messages)
+
+    # Document with S3 source should be filtered, text should remain
+    formatted_messages = request["messages"]
+    user_content = formatted_messages[0]["content"]
+    assert len(user_content) == 1
+    assert user_content[0]["type"] == "text"
+    assert "Location sources are not supported by llama.cpp" in caplog.text
diff --git a/tests/strands/models/test_mistral.py b/tests/strands/models/test_mistral.py
index 7808336f2..ad74bae89 100644
--- a/tests/strands/models/test_mistral.py
+++ b/tests/strands/models/test_mistral.py
@@ -1,3 +1,4 @@
+import logging
 import unittest.mock
 
 import pydantic
@@ -592,3 +593,65 @@ def test_update_config_validation_warns_on_unknown_keys(model, captured_warnings
     assert len(captured_warnings) == 1
     assert "Invalid configuration parameters" in str(captured_warnings[0].message)
     assert "wrong_param" in str(captured_warnings[0].message)
+
+
+def test_format_request_filters_s3_source_image(model, caplog):
+    """Test that images with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.mistral")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "look at this image"},
+                {
+                    "image": {
+                        "format": "png",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/image.png"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    formatted_messages = model._format_request_messages(messages)
+
+    # Image with S3 source should be filtered, text should remain
+    user_content = formatted_messages[0]["content"]
+    assert user_content == "look at this image"
+    assert "Location sources are not supported by Mistral" in caplog.text
+
+
+def test_format_request_filters_location_source_document(model, caplog):
+    """Test that documents with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.mistral")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "analyze this document"},
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    formatted_messages = model._format_request_messages(messages)
+
+    # Document with S3 source should be filtered, text should remain
+    user_content = formatted_messages[0]["content"]
+    assert user_content == "analyze this document"
+    assert "Location sources are not supported by Mistral" in caplog.text
diff --git a/tests/strands/models/test_ollama.py b/tests/strands/models/test_ollama.py
index 14db63a24..d17894028 100644
--- a/tests/strands/models/test_ollama.py
+++ b/tests/strands/models/test_ollama.py
@@ -1,4 +1,5 @@
 import json
+import logging
 import unittest.mock
 
 import pydantic
@@ -559,3 +560,68 @@ def test_update_config_validation_warns_on_unknown_keys(model, captured_warnings
     assert len(captured_warnings) == 1
     assert "Invalid configuration parameters" in str(captured_warnings[0].message)
     assert "wrong_param" in str(captured_warnings[0].message)
+
+
+def test_format_request_filters_s3_source_image(model, caplog):
+    """Test that images with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.ollama")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "look at this image"},
+                {
+                    "image": {
+                        "format": "png",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/image.png"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model.format_request(messages)
+
+    # Image with S3 source should be filtered, text should remain
+    formatted_messages = request["messages"]
+    user_message = formatted_messages[0]
+    assert user_message["content"] == "look at this image"
+    assert "images" not in user_message or user_message.get("images") == []
+    assert "Location sources are not supported by Ollama" in caplog.text
+
+
+def test_format_request_filters_location_source_document(model, caplog):
+    """Test that documents with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.ollama")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "analyze this document"},
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model.format_request(messages)
+
+    # Document with S3 source should be filtered, text should remain
+    formatted_messages = request["messages"]
+    user_message = formatted_messages[0]
+    assert user_message["content"] == "analyze this document"
+    assert "Location sources are not supported by Ollama" in caplog.text
diff --git a/tests/strands/models/test_openai.py b/tests/strands/models/test_openai.py
index 7c1d18998..6eeb477d9 100644
--- a/tests/strands/models/test_openai.py
+++ b/tests/strands/models/test_openai.py
@@ -1,3 +1,4 @@
+import logging
 import unittest.mock
 
 import openai
@@ -1246,3 +1247,67 @@ def test_init_with_both_client_and_client_args_raises_error():
 
     with pytest.raises(ValueError, match="Only one of 'client' or 'client_args' should be provided"):
         OpenAIModel(client=mock_client, client_args={"api_key": "test"}, model_id="test-model")
+
+
+def test_format_request_filters_s3_source_image(model, caplog):
+    """Test that images with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.openai")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "look at this image"},
+                {
+                    "image": {
+                        "format": "png",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/image.png"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model.format_request(messages)
+
+    # Image with S3 source should be filtered, text should remain
+    formatted_content = request["messages"][0]["content"]
+    assert len(formatted_content) == 1
+    assert formatted_content[0]["type"] == "text"
+    assert "Location sources are not supported by OpenAI" in caplog.text
+
+
+def test_format_request_filters_location_source_document(model, caplog):
+    """Test that documents with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.openai")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "analyze this document"},
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model.format_request(messages)
+
+    # Document with S3 source should be filtered, text should remain
+    formatted_content = request["messages"][0]["content"]
+    assert len(formatted_content) == 1
+    assert formatted_content[0]["type"] == "text"
+    assert "Location sources are not supported by OpenAI" in caplog.text
diff --git a/tests/strands/models/test_writer.py b/tests/strands/models/test_writer.py
index 963904002..81745f412 100644
--- a/tests/strands/models/test_writer.py
+++ b/tests/strands/models/test_writer.py
@@ -1,3 +1,4 @@
+import logging
 import unittest.mock
 from typing import Any
 
@@ -435,3 +436,69 @@ def test_update_config_validation_warns_on_unknown_keys(model, captured_warnings
     assert len(captured_warnings) == 1
     assert "Invalid configuration parameters" in str(captured_warnings[0].message)
     assert "wrong_param" in str(captured_warnings[0].message)
+
+
+def test_format_request_filters_s3_source_image(model, caplog):
+    """Test that images with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.writer")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "look at this image"},
+                {
+                    "image": {
+                        "format": "png",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/image.png"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model.format_request(messages)
+
+    # Image with S3 source should be filtered, text should remain
+    formatted_messages = request["messages"]
+    user_content = formatted_messages[0]["content"]
+    assert len(user_content) == 1
+    assert user_content[0]["type"] == "text"
+    assert "Location sources are not supported by Writer" in caplog.text
+
+
+def test_format_request_filters_location_source_document(model, caplog):
+    """Test that documents with Location sources are filtered out with warning."""
+    caplog.set_level(logging.WARNING, logger="strands.models.writer")
+
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                {"text": "analyze this document"},
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+                {
+                    "document": {
+                        "format": "pdf",
+                        "name": "report.pdf",
+                        "source": {"location": {"type": "s3", "uri": "s3://my-bucket/report.pdf"}},
+                    },
+                },
+            ],
+        },
+    ]
+
+    request = model.format_request(messages)
+
+    # Document with S3 source should be filtered, text should remain
+    formatted_messages = request["messages"]
+    user_content = formatted_messages[0]["content"]
+    assert len(user_content) == 1
+    assert user_content[0]["type"] == "text"
+    assert "Location sources are not supported by Writer" in caplog.text