Martin Bashir 05/22/13

Tamerlan Tsarnaev linked to 2011 triple homicide in Mass.

NBC News' Pete Williams reports on the new link discovered between Boston bombing suspect Tamerlan Tsarnaev and a Florida man, Ibragim Todashev, to a triple homicide in Waltham, Massachusetts in 2011. ... more Duration: {{video.duration.momentjs}}