During the same period the program also targeted Malcolm X. While an FBI spokesman has denied that the FBI was "directly" involved in Malcolm's murder in 1965, it is documented that the Bureau worked to "widen the rift" between Malcolm and Elijah Muhammad through infiltration and the "sparking of acrimonious debates within the organization", rumor-mongering, and other tactics designed to foster internal disputes, which ultimately led to Malcolm's assassination. The FBI heavily infiltrated Malcolm's Organization of Afro-American Unity in the final months of his life. The Pulitzer Prize-winning asserts that most of the men who plotted Malcolm's assassination were never apprehended and that the full extent of the FBI's involvement in his death cannot be known.