McGonagle was the leader of a gang that competed with Irish gangster boss James "Whitey" Bulger's Winter Hill Gang. Bulger was suspected of involvement in McGonagle's death in 1974 and 18 other mob murders between 1973 and 1985.
Bulger, leader of the South Boston gang, was the ruthless kingpin of a criminal empire Federal judge said committed "unfathomable" did. His notorious reign inspired Jack Nicholson's character in Martin Scorsese's film The Departed. Bulger escaped police for 16 years before being captured in 2011.
He died Tuesday in a West Virginia jail, an 89-year-old man sentenced to life imprisonment and five years in prison.
Bulger, a longtime FBI informant, was killed in the Hazelton jail in Bruceton Mills. According to the Federal Penitentiary, he was not approached at 8:20 in the morning.
He was pronounced dead by the medical examiner in Preston County after the rescue efforts failed. No other inmates or employees were injured, the prison office said.
The FBI is investigating the death of Bulger, who had taken place the day after his transfer to the facility in West Virginia, the prison office said.
"It's a Happy Day"
One Statement by Massachusetts lawyer Andrew Lelling was short on Tuesday. Bulger was not mentioned unless he died.
"We received a message this morning about the death of James" Whitey "Bulger, our thoughts are with his victims and their families," the statement says.
The brother of a woman who murdered Bulger in 1981 was told CNN, "It's a happy day."
Steven Davis & # 26; 26-year-old sister Debra Davis was the girlfriend of Bulger's partner Steve "The Rifleman" Flemmi. Flemmi testified that he had lured Davis into a house where Bulger had strangled her. Flemmi testified that he "unintentionally got Davis out of control", he and Bulger were FBI informants, and Bulger said several times "he wanted to kill Davis" because she knew about the relationship with the FBI.
The defense testified of hitman John Martorano, who admitted that he had "accidentally strangled" Davis. Martorano was imprisoned for 12 years, but was released in 2007 to testify against Bulger.
The End of a "16-Year Honeymoon"
In 1995, Bulger skipped the city from a pending indictment, allegedly on a tip from an FBI agent.
The mob boss who took Osama bin Laden's place on the FBI's top 10 most wanted list hid in sight in Santa Monica, California. He and his girlfriend, Catherine Elizabeth Greig, lived blocks under the pseudonym Charlie and Carol Gasko. The wrong name was even on the bell list.
The couple ate a few nights in a white tablecloth operation where Hollywood producers were pulled and sat in a corner table on the back of the restaurant, a manager said. They were generally polite as well. Bulger often wore a hat, the brim was pulled down, neighbor Catalina Slim told CNN in 2011.
"They were kind of mysterious, even on the phone – you could not call them," she said. "Sometimes I wanted to give them a tip for sale."
One tip led the authorities to him.
In 2011, the FBI lured a likely unsuspecting Bulger out of his oceanfront home. Bugler received a call and was told that a burglary had broken into his locker in the basement of his building. The FBI arrested Bulger when he saw it, CNN said.
Bulger would call his years as a refugee with Greig a "16-year honeymoon".
During the trial of Bulger, cruel details of the deaths were reported, in which he was accused of involvement.
In the summer of 1983, Bulger organized a meeting with Barrett on the pretext that he had stolen diamonds that he wanted to get rid of. When Barrett appeared in the house, Weeks, Bulger, and Flemmi waited.
You chain Barrett to a chair. For hours, they grill him about a rival gang and local drug dealing, Weeks said.
Barrett tried to find his way out and told Bulger about his $ 40,000 supply.
Weeks said Bulger had left the house to pick up the money while he and another coworker were watching Barrett. When Bulger returned, he told Barrett to go downstairs. Then Bulger put a gun behind Barrett's head and squeezed the trigger, according to Weeks.
"Nothing happened," Weeks said.
Bulger realized the gun was safe. He removed security and shot Barrett, Weeks said.
"It's just sad that it took so long"
During his sentence, Bulger did not make eye contact with relatives of those killed and Hill Gang, who was slain by his accomplices in the winter.
He was a convicted murderer in the 1980s. He would probably die in prison.
Carmen Ortiz, the former US Attorney for Massachusetts, who oversees Bulger's prosecution, said she hopes that Bulger's fame has not taken his victims' focus. Ortiz says she hopes for his death "is the end of a very sad chapter in the history of Boston where this man has done so much damage to many people through his brutal crimes."
It took so long, "said Steven Davis.
Ray Sanchez, Laura Ly, Kristina Sgueglia, and Ann O'Neill of CNN contributed to this report, and Michael Martinez and Laura Batchelor also contributed to this report.