Investigators will excavate Michigan driveway in search for Teamsters leader who disappeared in 1975.
Forensic anthropologists will help Michigan's Roseville Police Department dig for the body of former union leader Jimmy Hoffa on Friday.
Hoffa went missing July 30, 1975 and was declared dead seven years later on July 30, 1982.
A man who is seriously ill and dying from cancer told Roseville police he saw men moving a black bag at the house's garage hours after Hoffa went missing more than 35 years ago.
"About a month or so ago an individual gave me a call who wanted to talk about a body that he allegedly witnessed being interred here in the city of Roseville approximately 35 years ago," said Roseville Police Chief James Berlin. "That lead us to where we're at today."
Officials did radar tests on the ground at the home this past week underneath a cement slab in the back yard.
"The radar test shows that the ground had been disturbed at some point in time. It shows an anomaly that would not normally be there," said Berlin. "Because of that anomaly we're going to do a core sample to test for remains."
Berlin said police believe the man saw what he says he saw.
"We believe he is credible enough that he believes what he saw. That something took place that day out of the ordinary," the chief said.