The FBI says one of its agents shot dead a man being questioned over links to one of the Boston marathon bomb suspects because he turned violent.<br/> <br />The shooting happened at an apartment complex in Florida.<br/> <br />Ibragim Todashev was being interviewed about links to Tamerlan Tsarnaev.<br/> <br />Todashev was of Chechen origin like the Tsarnaev brothers who are suspected of carrying out the bombings.<br/> <br />A friend of Todashev said he knew Tsarnaev but wasn't involved in the attack and had wanted to leave the country.<br/> <br />(SOUNDBITE)(English) KHUSN TARAMIV, FRIEND OF IBRAGIM TODASHEV, SAYING:<br/> <br />"He cancelled the tickets because the FBI had been like, I don't know, they'd been pushing him, you know what I'm saying, they'd been pushing him. They said 'don't leave, don't leave' so he decided to stay. But we had a feeling, worst case scenario, that something like that's going to happen, you know what I mean? And it happened eventually and we tried to avoid it."<br/> <br />Three people were
