Whitey Bulger killed immediately after arriving in West Virginia prison: report
James "Whitey" Bulger in booking photos as a young convict and shortly before his death

Notorious Boston mobster James "Whitey" Bulger is dead, the apparent victim of a slaying at the West Virginia prison where he was transferred yesterday.

NBC News reports that Bulger is dead at age 89, citing multiple sources.

A West Virginia newspaper had earlier reported on the apparent slaying, saying that an inmate was killed overnight and suggesting it may have been Bulger.

Bulger had been moved between prisons in Florida, Oklahoma and West Virginia in the past week. The Hazelton prison where he died is "one of the federal system's roughest prisons," reports the West Virginia newspaper.

Bulger was convicted of killing at least 11 people and his life story was told in the Johnny Depp movie Black Mass.