A 29-year-old man has been charged in connection to the fatal stabbing of Emmet Connolly over the weekend.
The man, who is from South Dublin, is expected to appear before court later today.
Mr Connolly (32), an archaeologist, died shortly after 1am yesterday morning, after suffering serious stab wounds to the abdomen.
He had returned home to Dartry, near Rockcorry, Co Monaghan, less than two weeks ago after living in Australia for some 18 months.
It is understood the victim was stabbed repeatedly following a suspected argument at a house in the Lodge View estate – a three-bedroomed, two-storey, semi-detached house in Cootehill, Co Cavan.
It is understood that there were young children in the house at the time of the stabbing, but they did not witness the incident.
Gardai were called to the scene in the early hours of yesterday morning.
Mr Connolly was discovered at the house with severe injuries and was pronounced dead at the scene a short while later.
Shocked neighbours of the normally quiet housing estate told how the two men had been spotted chatting amicably in nearby Cootehill town earlier on Saturday afternoon.
One local said some people had gathered at the residence on Saturday evening before the incident but added: "It wasn't a major party or anything like that.
"There were parties every so often in that house and there would be music playing but it wasn't so loud that I would have ever complained," she said.
Mr Connolly's body remained at the house for several hours yesterday, where investigating gardai from Bailieborough preserved the scene for a forensic examination.
A post-mortem was also carried out yesterday afternoon by Deputy State Pathologist Michael Curtis.
The body was removed around 4pm, at which point Parish Priest Owen Collins led a short prayer for the deceased just outside the house.
Gardai arrested a man at approximately 6am yesterday morning and he was detained in Bailieborough garda station under Section Four of the Criminal Justice Act.
Late last night, the man was charged in connection to the fatal stabbing and was expected to appear before court later today.
Gardai are continuing to investigate the matter and are appealing for anyone who was at the house, in the area of Lodge View or with any information to contact them at Bailieborough garda station on 042 9694570 or on the Garda Confidential line 1800 666 111 or at any garda station.