A man in his 30s is in a critical condition in hospital after an alleged serious assault in Ballaghaderreen, Co Roscommon, in the early hours of New Year’s Day.
Gardaí have arrested a man in his 40s in connection with their investigation into the Barrack Street incident, which they say occurred at about 1am.
He is being detained at a Garda station in the north western region under section 4 of the Criminal Justice Act of 1984.
The male in his 30s was brought to Beaumont Hospital in Dublin.
Gardaí are appealing for witnesses to the alleged assault.
A senior investigating officer has been appointed, and gardaí have established an incident room at Castlerea Garda station.
They are seeking information and video footage people may have of the Barrack Street area between 12.45am and 1.15am on Thursday.