We still know little about the shooting that resulted in the death of a Chechen man who knew Boston bombing suspect Tamerlan Tsarnaev, but law-enforcement officials now say Ibragim Todashev was unarmed at the time. The 27-year-old was killed a week ago during an interview with FBI agents about his possible connection to a triple murder in Waltham, Massachusetts, in 2011. An anonymous official says Todashev lunged at an agent and overturned a table, but was not armed with a gun or knife.
