The Garda Ombudsman is investigating the death of a 23-year-old man who had been in garda custody in Co Kildare.
He was arrested yesterday afternoon in Maynooth and taken to Leixlip Garda Station.
Gardaí say the man was intoxicated when arrested.
An ambulance was called and he was taken to Connolly Hospital Blanchardstown.
He was pronounced dead later in the afternoon.