Three men have been charged with the murder of notorious Boston mob boss James "Whitey" Bulger, who was beaten to death at a federal prison in West Virginia.
Four people have been charged with conspiracy to commit first-degree murder.
Both DeCologero and Geas were charged with aiding and abetting first degree murder and assault resulting in serious bodily injury.
There is an additional charge of making false statements.
The United States Penitentiary Hazleton in West Virginia is where DeCologero and Geas are being held.
The Justice Department said that he was arrested in Florida on Thursday.
If they are found guilty of conspiracy to commit first-degree murder, they will be sentenced to life in prison.
After fleeing Boston in 1994 he was tipped off about a pending RICO indictment against him for running a violent Irish American organized crime empire. The FBI received a tip that led to the capture of the man they had been looking for. After Osama bin Laden's death, the FBI assumed the top spot on the most wanted list. He was found guilty of participating in 11 murders and was sentenced to 31 years in prison. He was sentenced to life in prison after being found guilty of a crime. He only spent a day at the United States Penitentiary Hazleton before he was killed. The New York Times reported that a law enforcement official said his body was badly beaten in the murder and became unrecognizable. When he died, he was 89 years old.
The New York Times wrote about Whitey Bulger's fatal prison beating.