Gardaí have arrested two more people in the investigation into the fatal shooting of a man in Tallaght last week.
Shay O'Byrne (27) was shot in the Tymon estate in Tallaght, west Dublin, on Friday night.
Garda arrested a 33-year-old man and 35-year-old woman yesterday evening under Section 30 of the Offences Against the State Act. The man is being held at Terenure Garda station, while the woman is in Tallaght Garda station.
A 31-year-old man arrested on Tuesday is still being held.
Mr O'Byrne and his partner were sitting in a parked car outside a house at Tymon North Park just before 8.30pm when a gunman got out of another car, approached their vehicle and opened fire with a handgun. It is believe that the man was shot in the back as he ran away from the gunman.
The killing has been linked to a feud between rival drug gangs in the Crumlin and Drimnagh suburbs of Dublin.