Gardai are appealing for witnesses to a serious assault in Blanchardstown.
The attack happened on the Main Street in the early hours of Sunday morning at around 1:55am.
The victim in his early 30s received serious head injuries during an assault outside a pub.
He was taken to Connolly hospital where his condition is described as stable.
A 30-year-old man was arrested by gardai, he has since been released without charge and a file will be prepared for the DPP.
Officers are looking to speak to anyone who was in the area at the time to contact Blanchardstown Garda Station on (01) 666 7000 or the Garda Confidential Line 1800 666 111.