Gardaí are continuing to question a man in his 30s who was arrested in connection with the assault of two off-duty gardaí in Dublin city centre yesterday morning.
An intensive investigation in ongoing into the assault, which occurred at the junction of Dame Street and Eustace Street at around 1.30am yesterday morning.
The man is being detained at a garda station in the Dublin region under Section 4 of the Criminal Justice Act, 1984.
Both gardaí sustained injuries during the course of the assault.
One of the men, who is in his 40s, remains in a critical condition at Beaumont Hospital.
The second man was taken to St James's Hospital, but was subsequently discharged.
Garda sources are describing it as "an unprovoked attack" on the two men who were making their way home after a night out.
They have carried out a forensic examination of the area and are examining CCTV footage.
An appeal has been made by gardaí for any witnesses, particularly anyone who may have mobile phone footage (or dash-cam) and who was in the Dame Street/Temple Bar area of Dublin between 1am and 1.45am yesterday, to contact them.
Hostile place
Gary Gannon, Social Democrats TD for Dublin Central, has said the city centre is not safe and has become a hostile place.
Regarding recent assaults in the city centre, Mr Gannon said the increase in such incidents was was due to a removal of a garda presence in the area.
Speaking on RTÉ's The Week in Politics programme, he said the area also does not look safe owing to the dereliction of buildings.
Ciarán Ahern, Labour TD for Dublin South-West, said more visible policing is needed similar to other European cities.
Mr Ahern said there was also a need to encourage people to live in the city centre.
