Jimmy Hoffa regarded his efforts to regain power within the Teamsters as a threat to their control of the union's pension fund. The FBI has called the report the definitive account of what agents believe happened to Hoffa. In the book "The Iceman: Confessions of a Mafia Contract Killer", Richard Kuklinski claimed to know the fate of Hoffa: his body was placed in a 50-gallon drum and set on fire for "a half hour or so," then the drum was welded shut and buried in a junkyard. Later, according to Kuklinski, an accomplice started to talk to federal authorities and there was
Jimmy Hoffa caused by the 1975 disappearance of her husband, because her health had declined steadily since then. She is entombed in Michigan. In 1989, Kenneth Walton, the head of the FBI's Detroit office, told "The Detroit News" that he knew what happened to Hoffa. "I'm comfortable I know who did it, but it's never going to be prosecuted because ... we would have to divulge informants, confidential sources." In 2001, the FBI matched DNA from Hoffa's hair—taken from a brush—with a strand of hair found in a 1975 Mercury Marquis Brougham driven by longtime friend Charles "Chuckie" O'Brien on July 30,