Gardaí are investigating after a man was fatally assaulted in an apartment complex in the North Quay area of Carrick-on-Suir, Tipperary over the weekend.
Emergency services received a call at approximately 11.30pm on Saturday.
The man, who was in his 40s, had received an apparent stab wound and was taken to Waterford University Hospital in a critical condition, but passed away earlier this morning.
The office of the State Pathologist has been notified and a post mortem is due to take place today.
An incident room has also been established at Clonmel Garda Station and investigations are ongoing.
A man, also in his 40s, has been arrested and is being detained at Clonmel Garda Station under Section 4 of the Criminal Justice Act, 1984.
Gardaí are appealing for anyone with information to come forward.
Clonmel Garda Station: 052 6177640
Garda Confidential Line: 1800 666 111