A 19-year-old man who was struck by a garda patrol car in Tallaght this morning has died.
The victim has been named locally as Phillip Hogarty, who was from Tallaght. He was Chairman of the Irish Chess Union.
It is understood that the patrol car was not involved in a pursuit at the time.
The crash happened near the junction of the N81 and the Cheeverstown Roundabout in Tallaght at 2.30am.
The collision occurred on a section of the road where it becomes single carriageway, and where roadworks are under way.
The man was taken to Tallaght Hospital and had been on a life-support machine all day.
The Garda Ombudsman Commission was informed about the accident at 7am this morning.
Their investigators have examined the scene, but it is not yet known how long the investigation will take.
The Garda Ombudsman Commission has already spoken to Philip Hogarty's family and they have appealed for anyone who may have witnessed the collision to come forward.