The intended target of a fatal shooting that left a father-of-two dead has declared: 'There's going to be war'.
Innocent man Keith Walker (36) was gunned down in broad daylight on Shelerin Road, Clonsilla on Friday afternoon.
He died after he was shot repeatedly by a gunman dressed as a woman, in what gardaí believe to be a case of mistaken identity.
A notorious Dublin gang boss who is suspected of being behind the shooting dead of the innocent dad has been arrested by gardaí.
The 38-year-old notorious criminal was once head of the Westies gang and was a close associate of slain crime bosses Eamon 'The Don' Dunne and Michael 'Micka' Kelly.
Now, the intended target of the attack, Jay O'Connor, who is believed to have been behind a 2012 attack on the gang boss's life, has spoken out.
Speaking to the Irish Sun, he said of his rivals: "They won't see the end of the week".
Both O'Connor and the chief suspect in this latest attack were both members of the Westies gang but fell out some years ago.
O'Connor was suspected of being linked to an attack which saw the mobster shot six times as he sat in a car in Hartstown in 2012. Sources say that the feud has been ongoing for some time.
O'Connor has reacted with a foul-mouthed tirade to the Irish Sun newspaper this morning.
"I'll tell you a story, there's going to be a f***ing war in Blanchardstown - they are f***ing dead, stone f***ing dead," he said.
This is not the first time that O'Connor has been caught up in a dispute with former associates.
The Clondalkin-based gangster previously fell foul of the Real IRA and had one of his fingers chopped off at the direction of Real IRA boss Alan Ryan.
He was tortured and beaten at Fairview Park in north Dublin, where one of his severed fingers was later found.
O'Connor was also a suspect in the murder of a Lithuanian crime boss in 2013. Gintaras Zelvys was shot twice in the body with a handgun as he arrived with his wife to open up his 'cash for clothes' business in the Greenogue industrial estate, Rathcoole, west Dublin,
It is believed that Mr Walker, a father-of-two, was shot because he arrived at a pigeon club in a car linked to O'Connor. The pair were friends, though Mr Walker - who was due to wed his fiancée shortly - had no ties to criminal activity.
Mr Walker was very active in his local community in Clondalkin and refereed underage football matches.
Two other men are being questioned in connection with the murder investigation. One man was arrested on Saturday morning in Meath. The final two arrests took place following a series of raids on Saturday evening.