THE crime lord known as The Don has set up a deadly debt-collecting agency.
The Dublin man, who is believed to have been involved in 12 murders in just over two years, collects debts on behalf of drug traffickers.
The gangboss, described by gardai as a "psychopath", has struck fear into the hearts of the capital's criminal underworld.
Garda intelligence has indicated that the man, believed to be in his thirties and originally from Finglas, is now the city's leading gangster.
His vast gang possess a huge array of firepower needed to collect debts quickly and gain a lucrative commission for his work.
He is believed to be responsible for a dozen deaths in the last 28 months.
Gardai now fear he has grown "out of control".
"This man is a psychopath and has grown out of control" a senior garda officer said.
"He is ruling gangland by fear and the murders in the past week are further evidence that he and his associates should not be crossed.
"Not content with making profits from his own activities, he has now branched out by capitalising on the name he has built up with in the criminal underworld, and collecting the debts owed to others also allows him a closer look at the vulnerability of his would-be rivals."
The man is also believed to be linked to the prime suspect in the brutal double murder on Pearse Street on Sunday evening. Meanwhile, the four suspects in the double gangland murder on Pearse Street have had their periods of detention extended by a further 72 hours.
The prime suspect in the inquiry, who is believed to be a "gun for hire", was arrested along with his girlfriend two hours after the killings by heavily armed gardai.
Two other suspects were picked up on Sunday night and all four were brought in front of Dublin District Court last night for a special sitting, where they had there period of detention extended.
Under section 50 of the Criminal Justice Act a chief superintendent must give evidence to a judge warranting a suspect's continued detention.
Brendan Molyneaux and his friend, Paddy Mooney, who had no gangland connections, were chatting in Mr. Molyneaux's flat when two gunmen burst in through the front door at 6.45pm last Sunday.
The men were shot in the head and chest.
Mr Molyneaux had been targeted because of underworld intelligence that he had agreed to kill the man believed responsible for the murder of criminal Paul 'Farmer' Martin at the Jolly Toper pub in Church Street, Finglas, last August.
Justice Minister Dermot Ahern has described those involved in the Pearse Street murders and the abduction and murder of drug trafficker John Paul Joyce last Thursday as an "insidious cancer".