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Andrea Mitchell

Officials scour Boston for clues in bombings

More than 100 federal, state and local investigators are scouring a 12 block stretch around Boston’s Boylston Street for clues to who was responsible for Monday’s bombing. The New York Times’ Mark Mazzetti talks about the latest in the investigation. Mazzetti also shares his thoughts on a report released by the non-partisan group, “Constitution Project,” which charges that the U.S. engaged in torture post 9/11.

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