It's after the discovery of a man's body in the Galway's Lane area of Douglas
A 21 year old man's been arrested in connection with the death of a 66 year old man in Cork.
The man who is from Togher, was arrested on suspicion of murder after Joe O'Callaghan was found with suspected head injuries in his apartment in Galway's Lane, Douglas.
The body of the father of three was discovered by his wife when she returned from work at 8.30 this morning.
Gardai have sealed off the area and launched an investigation into his death.
Gardaí are appealing for anyone who was in the Galway's Lane area of Douglas between 10.00pm on Sunday night and 8:30am on Monday morning to contact Togher garda station on 021-4947-120, the Garda Confidential Line at 1800-666-111 or any garda station.