A man is seriously ill after suffering head injuries in an assault.
The victim, aged in his late 30s, was found unconscious on Dame Lame in central Dublin close to the entrance to a pub at 11.30pm on Saturday.
Gardai said the alarm was raised by a member of the public.
The injured man was rushed to St James’s Hospital but was later transferred to Beaumont, which has specialist units for severe head injuries.
Gardai appealed for witnesses to the assault, which occurred in an area very busy with revellers every Saturday night.
Crowds were also in the city on Saturday for the Pride festival.
Detectives urged anyone who was in the Dame Lane area between 11pm and midnight to contact them at Pearse Street Garda Station.