After a two-week intensive search by the FBI there is still no sign of union boss, Jimmy Hoffa's body.

Based on a tip, agents destroyed a Michigan horse farm and barn, then dug up several sites on Hidden Dreams Farm 32km (20 miles) from the restaurant where he was last seen in 1975 reports the BBC.

Hoffa disappeared after meeting a mafia boss that prevented him in leading the Teamsters union.

According to the BBC, FBI used cadaver dogs, archaeologists and heavy construction equipment at the farm for the search.