WASHINGTON, Oct. 30 (Xinhua) -- A notorious U.S. mob boss who was convicted in 2013 of multiple murders and other crimes was found dead at a federal prison in state of West Virginia, authorities said Tuesday.
James "Whitey" Bulger, 89, was pronounced dead by a medical examiner after attempts to revive him failed, the West Virginia prison said in a statement.
Bulger was found unresponsive at approximately 8:20 a.m. Tuesday, according to the prison, where he was transferred a day ago.
Details on how Bulger died were not immediately known.
Local news outlets said his death was being investigated as a homicide, citing unidentified sources.
Bulger was sentenced to life in prison after being convicted of participating in 11 murders, extortion, money laundering and weapons charges in a high-profile trial five years ago.
He was arrested in Santa Monica, state of California, in 2011 after 16 years at large and 12 years on the FBI's most-wanted persons list.
Bulger ran his operation out of the northeast city of Boston, state of Massachusetts.
