DEATH threats have been made against the boy who witnessed the murder of the Corbally brothers.
The 14-year-old's life is now in danger because he was in the car when the two hitmen struck, his mother said.
The threats were allegedly made as the ERU were deployed on the streets of Ballyfermot today amid fears of reprisals for the double killing.
The teenager, from Clondalkin, has been interviewed by gardai about the killings.
He was shot three times in the incident but survived and is now under armed guard.
He is the only eye-witness to the double-homicide and was questioned by gardai after he had undergone surgery for his injuries on Monday evening.
Tensions remain high in Ballyfermot, where the slain Corbally brothers were from, amid fears that rival factions may carry out further attacks.
The mother of the 14-year-old boy injured in the attack yesterday got a High Court injunction preventing a newspaper from naming him.
The frightened teenager, from the Moorefield estate in Clondalkin, remains under armed guard at Tallaght Hospital after he sustained wounds to his chest and right arm.
Counsel for the mother told the High Court that the boy was playing with friends on the road when a number of men approached him, started talking to him about bikes and then offered him a lift home when the shooting took place.
Declan Doyle SC, for the boy's mother, said she was seeking the injunction because of threats to his life.
The boy is now under armed garda protection, he said. "There is a right to life and there is a clear and real danger to his life," the counsel said.
Ms Justice Mary Laffoy said it was a sufficiently serious matter to grant the injunction because there is a child involved and because of the general fear that his life would be in danger.
Meanwhile, garda patrols flanked by the Emergency Reponse Unit, have been put in place in West Dublin as the gang feud threatened to escalate.
A similar high-visibility policing operation was introduced in Coolock at the start of the year, following three killings in less than a week. A similar operation is now being rolled out in Ballyfermot, where the murdered brothers were from.
During the garda operation in Coolock, a leading ERU officer explained to the Herald the purpose of their presence.
"These operations are often referred to as 'area denial', they are designed to counteract gang activity in crime hot spots," he said.
"We set up different checkpoints in the affected area. We don't get knowledge of the whereabouts until the very last minute to guarantee the element of surprise and also the positioning has to be based on up-to-date intelligence.
"The purpose of the exercise is to make it difficult for these gangs to operate, it also allows for a cooling down period."
It is understood that last Monday's murders were the result of a feud between the Corbally brothers and the head of a West Dublin crime gang.
Intelligence reports suggest Paul (35) and Kenneth (32) Corbally, who were violent drug dealers, were murdered as part of a €40,000 contract.
The main suspect in the killing, a high-profile Ballyfermot gangster with at least 15 convictions, ordered the hit against them after they attempted to take him out in a hit in Bluebell six weeks ago.
Gardai renewed their call for information last night. Anyone who has information about the silver Audi A6, which was stolen in Co Carlow during the night of June 8 and June 9, has been asked to contact gardai.
The correct registration number for the car is 02 D 2633 but it may have been seen with either this number or the false number 00 KE 13498 between when it was stolen and the murders.
Anyone with any information is urged to contact Ronanstown garda station at (01) 666-7700 or the Garda Confidential Line at 1800 666111.