Hoffa Remains? FBI Searching Detroit Field for Former Teamsters Boss Jimmy Hoffa

The FBI is planning to excavate a site at a Detroit-area field on Monday as federal agents continue to look for the remains of former Teamsters boss Jimmy Hoffa, according to a law enforcement source with direct knowledge of the investigation.

Agents were seen in a field in Oakland Township north of Detroit, based in part on information provided by Tony Zerilli, a man alleged to have been a mobster with inside information. Zerilli, 85, is a former gangster who says he has information about where the remains of Hoffa are.

Earlier this year, Zerilli claimed that Hoffa was buried in a Michigan field about 20 miles north of where he was last seen in 1975.

"I'm dead broke. I got no money. My quality of life is zero," Zerilli previously told NBC 4 New York. "What happened to Hoffa had nothing to do with me in any way, shape or form. They accused me while I was away. If that's not an alibi I don't know what the hell an alibi is."

Zerilli was serving time in a Las Vegas prison when he learned of Hoffa's death in 1975. Hoffa famously told friends he was going to meet two men at a restaurant in Detroit but was never heard from again. The two men he was supposed to meet were both members of the mafia and allegedly held a lot of power in New Jersey and Detroit.

"Organized crime was involved in the disappearance of Jimmy Hoffa," former U.S. Attorney Keith Corbett told NBC. "Clearly when [Zerilli] returned, he would've been a person, based on his position in the hierarchy, who would have been able to learn the facts and circumstances surrounding the disappearance of James Earl Hoffa."