Notorious mobster James "Whitey" Bulger was brutally beaten to death behind bars. Now, a Vermont man has been named in the murder mystery.

Bulger terrorized the Boston area in the '70s and '80s. Convicted of 11 murders, but suspected of many, many more. Authorities finally nabbed infamous mobster Bulger in 2011 after years on the run. His horrific crimes made him somewhat of a legend and the subject of movies.

He wasn't just a cold-blooded killer, though. Bulger was also an FBI informant, spilling dirt against his rivals. And that may have played a role in his own death. He was moved to a West Virginia prison in October, where the 89-year-old was beaten beyond recognition with a padlock in a sock, and his eyes gouged out just hours after he arrived.

"Whitey Bulger went to bed that night and by that morning at 6 a.m. people knew he was there and looking for him," said Shelly Murphy, a Boston Globe investigative reporter.

Right away, investigators pointed to a career killer who hated rats -- Mafia hitman Freddy Geas.

"He was aware of Whitey, he had a distaste for informants," Murphy said.

Now, the New York Times reports Geas was cellmates with a former Montpelier man, Sean McKinnon. He's in federal prison for stealing numerous guns from R&L Archery in Barre and trading them for drugs in Connecticut.

The Times also reports that McKinnon was whisked to solitary right after the murder and suggests he may be under suspicion too, along with crime boss, Paul DeCologero and a New Hampshire man, Felix Wilson.

No one is charged with Bulger's murder -- planning it, or trying to cover it up -- and it's possible the men were moved to solitary as a precaution while the investigation proceeds.

But there's video reportedly showing at least two inmates wheeling Bulger to the corner of his cell where he was killed. And the Federal Bureau of Prisons tells the Times that one of the assailants had no ties to a crime family. And two possible assailants were not from Massachusetts.

The murder also raises questions about the Hazleton Penitentiary: How did it happen so quickly after Bulger arrived? Who was watching? Did someone purposely turn a blind eye?