One of Australia's most infamous gangland bosses, Carl Williams, has been beaten to death in prison.
Police said Williams, 39, died of a cardiac arrest after sustaining head injuries in a fight with an inmate.
He was serving a minimum of 35 years at a high security prison in Melbourne for the murder of three gang rivals.
Commonly known as "Fat Boy", Williams was a well-known figure in Melbourne whose life of crime had been turned into a hit television series.
In a statement, Victoria police said they believe "an altercation occurred between Williams and another inmate" at Barwon Prison.
BBC News - Australia gang boss Carl Williams dead in jail beating