Gardaí investigating the death of 45-year-old Vincent Kelly in Bray, Co Wicklow have arrested a man in his 40s.
He was arrested this morning and detained at Bray Garda station.
He has since been released without charge.
Mr Kelly was found unconscious with a serious head injury outside a hotel on Bray's Main Street at 2am on Saturday, June 9.
He was taken to Beaumont Hospital where he later died.
A file is being prepared for the DPP.
Gardaí are appealing for anyone with information to contact Bray Garda Station on 01-666 5300, the Garda Confidential Line on 1800 666 111 or any Garda station.