BOSTON | Fotios “Freddy” Geas, a Mafia hit man who is said to hate “rats,” is under suspicion in the slaying of former Boston crime boss and longtime FBI informant James “Whitey” Bulger, who was found dead Wednesday.

Geas and at least one other inmate are believed to have been involved in Bulger’s killing, authorities said. The longtime investigator was not authorized to discuss the matter and spoke on condition of anonymity.

In this April 14, 2009 photo, Fotios “Freddy” Geas appears for a court proceeding in his defense in the Al Bruno murder case, in Springfield, Mass. Geas and at least one other inmate are being investigated as suspects in the slaying of former Boston crime boss James “Whitey” Bulger, who was killed behind bars on Tuesday, Oct. 30, 2018, less than 24 hours after being transferred to a federal prison in West Virginia, according to a former investigator briefed on the matter. (Don Treeger /The Republican via AP)
In this April 14, 2009 photo, Fotios “Freddy” Geas appears for a court proceeding in his defense in the Al Bruno murder case, in Springfield, Mass. Geas and at least one other inmate are being investigated as suspects in the slaying of former Boston crime boss James “Whitey” Bulger, who was killed behind bars on Tuesday, Oct. 30, 2018, less than 24 hours after being transferred to a federal prison in West Virginia, according to a former investigator briefed on the matter. (Don Treeger /The Republican via AP)

Authorities have not disclosed the cause of death.

Among the many unanswered questions after Bulger was found dead on Tuesday: Why was he moved to the prison? And why was a frail 89-year-old like Bulger — a known “snitch” — placed in the general population instead of more protective housing?

Geas, 51, and his brother were sentenced to life in prison in 2011 for their roles in multiple violent crimes, including the 2003 killing of Adolfo “Big Al” Bruno, a Genovese crime family boss who was gunned down in a Springfield, Massachusetts, parking lot.

Private investigator Ted McDonough, who knew Geas, told The Boston Globe: “Freddy hated rats.”

“Freddy hated guys who abused women. Whitey was a rat who killed women. It’s probably that simple,” McDonough told the newspaper, which first reported that Geas was under suspicion.

It was not clear whether Geas has an attorney. Several other lawyers who represented him over the years didn’t immediately respond to a request for comment.

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