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Tamerlan Tsarnaev's Trip Home to Russia Raises Questions for FBI

Investigators look for possible tie to Islamic radicalism during visit home to Dagestan.
01:30 | 04/21/2013

Transcript for Tamerlan Tsarnaev's Trip Home to Russia Raises Questions for FBI

As investigators peered deeply into the lives of the bombing suspects they will be taking -- very hard look at what happened in a remote and dangerous part of Russia visited not long ago it Brian Ross... See More
This transcript has been automatically generated and may not be 100% accurate.
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