A Florida man was shot and killed while being questioned by Boston bombing investigators after he lunged at them with a knife, officials have said. The shooting took place early on Wednesday in Orlando as officials questioned Ibragim Todashev, 27. The FBI initially said their agent had killed Todashev, but an updated statement left it unclear who had fired the fatal shot. Two Massachusetts State Police officers were also in the room, the FBI said. The FBI said an agent was taken to hospital with non - life threatening injuries, and an agency team has been dispatched to review the shooting, standard procedure in such cases. Police blocked off the apartment complex where the Chechen immigrant was shot.' Martial arts fighter 'US media reported that Todashev had known Tamerlan Tsarnaev, the ethnic Chechen Boston bombings suspect killed in a shootout with police days after last month ' s deadly marathon blasts. Two anonymous law enforcement officials told the Associated Press Todashev was shot after attacking the FBI agent with a knife. In a statement, the FBI said the agent and " two Massachusetts State Police troopers and other law enforcement personnel " had been interviewing Todashev when " a violent confrontation was initiated by the individual ". " During the confrontation, the individual was killed and the agent sustained non - life threatening injuries. " In an earlier statement, an FBI spokesman had said " the[FBI] Special Agent, acting on the imminent threat posed by the individual, responded with deadly force ". A roommate and friend, Khusen Tamarov, told the Associated Press that Todashev had been wary about being interrogated at a law enforcement office, asking that the questioning take place somewhere else. " This is the last thing I thought they would do, " Mr Tamarov said. " We had nothing to do with this. He had nothing to do with this. " He told Florida News 13 that the FBI had begun questioning and following Todashev soon after the Boston bombings.' A regular guy ' He was quoted as saying: "One day they started questioning us, next day after the bombing, not the bombing, after they found out the bombers were Chechnyans, and they started following us, watching us." He told the news station that the FBI had pressured Todashev into cancelling a plane ticket to Chechnya that he bought before the Boston bombings. Another roommate, Saeed Dunkaev, told the AP that Todashev had lived at various times with a group of other Chechens in Kissimmee, an Orlando suburb. "He's a regular guy, nothing wrong," Mr Dunkaev said. The Associated Press news agency meanwhile reports that Todashev was arrested earlier this month on suspicion of assault, after a dispute over a parking spot at an Orlando shopping centre. Todashev put a man in hospital with facial injuries during the fracas, according to a report from the Orange County Sheriff's Office. Public records show that Todashev - who was reportedly a mixed-martial arts fighter - lived in Watertown, Massachusetts, just outside Boston, last year. The Boston Marathon blasts killed three people and injured 264 others on 15 April. Tsarnaev's brother, Dzhokhar Tsarnaev, 19, is being held in a prison hospital after being shot before capture. He faces the death penalty if convicted.