NBC News reported on Wednesday that an FBI agent shot and killed a man after he suddenly turned violent. According to the Orlando Sentinel, the man who was killed was Ibragim Todashev, 27 years old, of Orlando, Florida, who was suspected of being involved in the Boston Marathon bombing on April 15 which killed 3 people and wounded 260. Previously, Todashev has shown a cooperative attitude during interrogation. Todashev was being investigated because he know primary suspect Tamerlan Tsarnaev, according to FBI spokesperson, Dave Couvertier.