Matthew Levitt

Lawyers for accused Boston Marathon bomber Dzhokhar Tsarnaev and a terrorism expert serving as a prosecution witness argued on Tuesday over whether the defendant was paraphrasing Al Qaeda propaganda in a note he left four days after the deadly attack.

Boston Marathon bombing suspect Dzhokhar Tsarnaev was heavily influenced by al Qaeda literature and lectures, some of which was found on his laptop, a counterterrorism expert testified at his trial on Monday.

Lawyers for accused Boston Marathon bomber Dzhokhar Tsarnaev and a terrorism expert serving as a prosecution witness argued on Tuesday over whether the defendant was paraphrasing Al Qaeda propaganda in a note he left four days after the deadly attack.

Boston Marathon bombing suspect Dzhokhar Tsarnaev was heavily influenced by al Qaeda literature and lectures, some of which was found on his laptop, a counterterrorism expert testified at his trial on Monday.