Authorities in Michigan will consider going to a grand jury because of new information in the nearly 30-year-old mystery of what happened to famed labor leader Jimmy Hoffa (search), officials confirmed to Fox News.

David Corcyca, the Oakland County, Mich., prosecutor who is handling the Hoffa case, said he is considering seeking subpoenas to the remaining suspects in the case.

On Friday, Fox News reported on one man's confession to killing the national Teamsters (search) president in 1975 at a Detroit home. After Frank Sheeran (search) — nicknamed "the Irishman' — made his claim, Fox News hired a team of forensic experts who found traces of blood in the house.

Because of the Fox News discovery, Oakland County officials went into the home Friday and removed floorboards and other material to test for DNA.

For more on the Hoffa case, click here.

Sheeran, who died in December, had been one of the handful of FBI suspects in Hoffa's murder. He was a local Teamsters president from Delaware who was close to Hoffa.

Sheeran initially made his confession to Charles Brandt (search) and later repeated the claim to Fox News. Brandt, who spent five years interviewing Sheeran, has written a new book called "I Heard You Paint Houses" (search), which lays out Sheeran's story and is set to be released in June.

"Frank Sheeran actually pulled the trigger," Brandt said.

Hoffa became the Teamsters (search) leader in 1957 but was sent to prison 10 years later for jury tampering and fraud. He was pardoned in 1971 after giving up the union presidency.

On July 30, 1975, Hoffa disappeared and authorities ultimately declared him the victim of a homicide. His body has never been recovered.

Fox News' Eric Shawn contributed to this report.