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'What happened to the laptop?' New details in Boston investigation


Top Talkers: Three friends of Boston Marathon bombing suspect Dzhokhar Tsarnaev have been arrested and accused of removing evidence and lying to the FBI. The Morning Joe panel -- including New York Magazine's John Heilemann and Mike Barnicle -- discusses the investigation. NBC News' Pete Williams, Michael Isikoff and Security Analyst Michael Leiter report on the latest details in the case.