MILWAUKEE, Wis. (WWJ) - Could an ace of spades playing card with a map scribbled by a dying police sergeant finally lead authorities to the body of teamster boss Jimmy Hoffa?
The cold case organization, the Case Breakers, believe so.
The national sleuth group made up of seasoned investigators with law enforcement, military, forensic, academic, legal and investigative skill sets, say the answer to one of the greatest unsolved mysteries in American history could be lying beneath a youth baseball diamond, right in the shadow of American Family Field, home of the Milwaukee Brewers.
As reported by the Milwaukee Journal Sentinel, the group says a "chilling" clue unearthed in their investigation into Hoffa, who famously disappeared from a Metro Detroit restaurant in 1975, zeroed them in on a little league ballpark built in the area that used to be Milwaukee County Stadium.
The Case Breakers say the piece of evidence, which was left on a playing card, them to believe Hoffa's remains were relocated to Milwaukee in 1995.
At the peak of his power in 1975 and hundreds of miles away from the suspected site in Wisconsin, Hoffa was seen emerging from the Red Fox restaurant in Bloomfield Hills between 2:30 and 3 p.m. on July 30.
Hoffa reportedly met with reputed Detroit mob enforcer Anthony "Tony Jack" Giacalone and alleged New Jersey mob figure Anthony "Tony Pro" Provenzano.
He was never seen or heard from again.
In the wake of Hoffa's disappearance, 50 witnesses were called before a federal grand jury, but no charges were ever brought and his case remains one of America's most iconic mysteries.
Dozens of digs have turned out to be a waste of time. Ranches, farms, driveways on both the east and west sides of the Metro Detroit area were dug up in search of Hoffa's resting place.
According to the group, the Milwaukee theory was developed in recent years after a playing card left behind by Sgt. Harold Walthers for his niece came to light.
Walthers was indicted for jewelry robbery and became an associate of Chicago mafia don Joey Aiuppa, the Milwaukee Journal Sentinel reported.
The sergeant died in 1997, but the year before, he showed his niece and then county deputy, Michelle, the playing card and indicated that 'if something happens to me, you'll know what to do.'"
On an ace of spades, Hoffa's name was written along with Aiuppa's, and "3rd Base Milwaukee Ball Park 9-16-95."
When Jim Zimmerman, a member of the Case Breakers team and acquaintance of Michelle, concluded in his research back in 2020 that Walthers was in some way intertwined with Hoffa's disappearance, Michelle dug up the card.
According to the scribble, the group theorizes Hoffa's remains are buried under third base at the since-demolished County Stadium, currently inside the Helfaer Field complex in the American Family Field parking lot.
On Oct. 2, 2023, the group visited the site along with Moxy, a cadaver-seeking dog with experience in search-and-rescue missions and body recoveries.
Case Breakers said the dog signaled at four possible "hits" at the stadium's old third-base location.
Although the group's leader, Thomas J. Colbert, told Fox News the next step is to dig and that federal agents seemed open to the possibility, the FBI and the Brewers organization have remain silent on the subject.
Questions are swirling after the latest proposed rest place of Hoffa was released, the biggest and most obvious of which is how someone could bury a body on the field in the middle of a baseball season.
The Milwaukee Journal Sentinel reported the Brewers were out of town on a road trip Sept. 16, 1995 -- with nine games to play that season -- so it appeared "a little unlikely" that a body could've been buried below third base, which looked pristine and undisturbed in recorded footage at the time .
The Case Breakers remain confident, however, and the team -- along with their findings-- are nothing to toss aside. The group has been involved in numerous high-profile cases around the country including D.B. Cooper, the Zodiac Killer and the Atlanta Murders.
Back in 2021, the organization claimed they identified the Zodiac Killer, although police and FBI voiced their doubts.
For now, one of America's most famous cases continues to go unsolved and the great question remains: who killed Hoffa and where is his final resting place?
We may never truly find out, but the theories are thrilling to follow.