Gardaí are appealing for witnesses to the alleged assault which happened at the junction of Dame Street and Euston Street in Dublin, in the early hours of Saturday morning.
Two men reported to be off duty Gardai were injured in the attack.
One of the men, in his 40s, has been taken to Beaumont Hospital Dublin where he is currently in critical condition.
A second man was taken to St James’s Hospital for medical treatment and has been subsequently discharged.
No arrests have been made and Investigations are ongoing.
Gardaí are appealing for any witnesses to this incident to come forward.
Anyone who may have camera footage (including dash-cam) from the Dame Street / Temple Bar area, between 1:00am and 1:45am, are being asked to make this footage available to Gardaí.
Gardaí are particularly looking to speak with any taxi drivers who were driving in the Dame Street area at the time and may have footage.
Anyone with any information is asked to contact Pearse Street Garda Station
