A note left by Dzhokhar Tsarnaev on the boat he was found in claims responsibility for the attack on the April 13 Boston Marathon, CBS News is reporting.

The suspect in the bombing used a pen to ink the note on the interior wall of the boat's cabin, CBS said, claiming the attacks were in response to the United States' military involvement in the Middle East.

According to CBS, the note said those injured in the Patriots' Day bombing were collateral damage in the same way Muslims have been injured during the wars in Afghanistan and Iraq.

For the full story, click over to the CBS News report on the note.

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