Jimmy Hoffa's body was crushed at a New Jersey junkyard
A Mafia hitman claimed that Hoffa's body was put in the trunk of a car that was subsequently crushed at a junkyard for scrap metal.
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Mafia assassin Richard Kuklinski claimed during a conversation with Philip Carlo, author of “The Iceman: Confessions of a Mafia Contract Killer”, that he murdered Jimmy Hoffa with a hunting knife, and then drove his body back to New Jersey with Hoffa’s body in the trunk to be taken to a junkyard, where the car was crushed and sold for scrap metal with Hoffa still in the trunk.
Many people find this theory to be unlikely and believe Kuklinski to be unreliable, as well as a fantasist. Former FBI agent and crime expert Robert Garrity has opposed this claim, deeming it as " the most embarrassing one to date"  Also, during an HBO interview conducted prior to the release of Carlo's book, Kuklinski claimed to have no knowledge of what happened to Hoffa, and to have only heard rumors, the inconsistency in Kuklinski's accounts cause many people to not believe in his involvement.