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Did the FBI miss a chance to catch Tamerlan?

Name: Did the FBI miss a chance to catch Tamerlan?
Uploaded: 2014-04-15T14:25:34-0400
Duration: 3 min 31 s
Description: Former Special Agent Rick DesLauriers, who ran the investigation of Tamerlan Tsarnaev two years before the Boston Marathon bombings, says the FBI did a "very, very thorough job" following up on the Russian lead.

Former Special Agent Rick DesLauriers, who ran the investigation of Tamerlan Tsarnaev two years before the Boston Marathon bombings, says the FBI did a "very, very thorough job" following up on the Russian lead.