Gardaí are investigating a violent assault in the city centre in the early hours of Sunday morning.
The man, who was socialising in the city for the weekend, was assaulted at St Mary’s Lane in the city centre.
A witness to the attack reported it to gardaí who attended the scene and found a man unconscious, with serious injuries.
The injured party was taken by ambulance to St Luke’s Hospital where he received treatment. Gardaí are following a line of enquiry.