The FBI has confirmed that an FBI agent shot and killed a man connected to Boston bombing suspect Tamerlan Tsarnaev last night. Ibragim Todashev, 27, was allegedly questioned by the agency about his relationship with Tsarnaev, whom he reportedly knew through martial arts. The FBI said in a statement that agents were interviewing Todashev "when a violent confrontation was initiated by the subject." Todashev was killed, and an agent was injured. Friends of Todashev have confirmed that he was from Chechnya and knew Tamerlan. While the FBI said Todashev is not suspected in the marathon bombing, they are investigating his role in a 2011 triple homicide. One of those victims was also a friend of Tamerlan's.