Francis (Frank) Green, about 55, was stabbed to death shortly before midnight last night in his home in Cooper Street, Paddington.
Police found him sitting slumped over a table with a knife driven into his chest near the collar-bone.
They said he was once one of Sydney's best known "standover" men but had lived quietly in recent years.
They said that over the years he had been knifed and shot several times.
He was a leader of the razor gangs and was once charged with murder.
Green occupied a comfortable ground floor flat with his wife in Cooper Street.
Police said he was stabbed while sitting down. He slumped forward over the table with his head on his arms.
A carving knife with a blade nearly a foot long had been plunged into his heart.
The table was set with glasses and bottled beer and biscuits.
A man and a woman were in the flat.
Detective-Sergeant J. Bateman ordered that no one should touch the body until scientific experts from the C.I.B. and a police doctor arrived.
Green, in the late twenties and early thirties, was the leader of Sydney's underworld.
He was a gunman who was feared even by desperate criminals.
One of his main activities was leadership of razor gangs which were broken up by the late Commissioner of Police (Mr. J. MacKay).
Police said he had extorted money by "standover" methods from racketeers, gambling houses and houses of ill-fame.
He had been shot several times, and there were two or three bullets in his body which doctors left there because they feared their removal could cause his death.
'Green, Francis Donald (Frank) (1905–1956)', Obituaries Australia, National Centre of Biography, Australian National University, http://oa.anu.edu.au/obituary/green-francis-donald-frank-13647/text24414, accessed 24 May 2013.