The father of two was assaulted on Saturday night.
A 24-year-old man has been arrested in connection with the murder of Vincent Parsons in Dublin.
He is currently being detained at Tallaght Garda Station where he can be detained for up to 24 hours.
34-year-old Vincent Parsons was out with friends at a pub in Killinarden on Saturday night when he was assaulted.
The father of two was later found with serious head injuries at a nearby estate.
He was brought to Tallaght Hospital where he was pronounced dead on Monday evening.
Gardaí believe he suffered an extremely violent death and that at least two people were involved.
