Updated

A tip from a dying man could finally be the missing clue in the mystery of what happened to Teamsters leader Jimmy Hoffa, who vanished 37 years ago.

MyFoxDetroit.com reports investigators are searching the ground beneath a suburban Detroit driveway after a man told authorities he saw a body being put into the ground around the same time Hoffa disappeared. The man is said to be dying of cancer and was not identified by police.

After the tip was received by the Roseville Police Department, the Michigan Department of Environmental Quality used ground penetrating radar on a 12-foot-by-12-foot patch beneath the driveway, said agency spokesman Brad Wurfel.

It found "that the earth had been disturbed at some point in time," Berlin said.

The environmental quality department on Friday will take soil samples that will be sent to a forensic anthropologist at Michigan State University to "have it tested for human decomposition," Berlin said.

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Results are not expected until next week. Police also plan to dig at the home on Friday.

Roseville Police Chief James Berlin tells MyFoxDetroit.com he believes something may be buried there, but he isn't sure it is the body of Hoffa.

"We are not claiming it's Jimmy Hoffa, the timeline doesn't add up," Berlin said. "We're investigating a body that may be at the location."

Hoffa was last seen on July 30, 1975, outside a suburban Detroit restaurant where he was supposed to meet with a New Jersey Teamsters boss and a Detroit Mafia captain. His body has not been found despite a number of searches over the years.

Innumerable theories about the demise of the union boss have surfaced over time. Among them: He was entombed in concrete at Giants Stadium in New Jersey, ground up and thrown in a Florida swamp or obliterated in a mob-owned fat-rendering plant.

The search has continued under a backyard pool north of Detroit in 2003, under the floor of a Detroit home in 2004 and at a horse farm northwest of Detroit in 2006.

The FBI had no immediate comment on the new effort in Roseville to The Associated Press.

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The Associated Press contributed to this report.