A DUBLIN gangster has bragged that his crew "whacked" Real IRA terror boss Alan Ryan.
The senior city criminal has claimed responsibility for the daylight murder.
Gardai are working on the theory that up to four different north Dublin gangs clubbed together to murder the terror boss.
The middle-aged hood -- who has mentored the leader of one of the four gangs -- boasted to pals: "It was us that whacked him."
The big time criminal is blamed with introducing tiger kidnappings to Ireland.
The development comes as gardai swooped on a Clongriffin apartment block which may have been used by the killers.
Detectives are investigating reports that the hitman was hiding out in the apartment block in the days before Ryan was shot dead.