Source: FBI searching Michigan field for Hoffa's remains

By CNN Staff
June 17, 2013 -- Updated 1507 GMT (2307 HKT)

(CNN) -- The FBI is planning to dig in a Detroit-area field Monday in a hunt for the remains of former Teamsters boss Jimmy Hoffa, according to a law enforcement source with direct knowledge of the investigation.

Agents on Monday morning were executing a search warrant for 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.

Earlier this year, Zerilli told New York's NBC 4 that Hoffa was buried in a Michigan field about 20 miles north of where he was last seen in 1975.

The FBI has spent months looking into Zerilli's claims before seeking court authorization to excavate the field and look for evidence of a shallow grave, according to the source.

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