The atmosphere surrounding the fight was tense and sometimes ugly, largely due to the repercussions of Ali's public embrace of Elijah Muhammad and the Nation of Islam. Malcolm X, who had a public and bitter falling out with Elijah Muhammad, had been assassinated several months before the fight, and the men arrested for the slaying were members of the Nation of Islam. Rumors circulated that Ali, who had publicly snubbed Malcolm after his break with Elijah Muhammad, might be killed by Malcolm's supporters in retaliation. The FBI took the threats seriously enough to post a 12-man, 24-hour guard around Ali. Liston's camp, in turn, claimed he had received a death threat from the Nation of Islam. The Fruit of Islam—the omnipresent, bow-tied paramilitary wing of the Nation of Islam—surrounding Ali only added to the sense of foreboding and hostility. Security for the fight was, for that time, unprecedented.