A man in his 20s has been stabbed to death in Clontarf in Dublin this morning.
The incident happened at 7.15am at a house in the St Lawrence Road area.
The man was pronounced dead at the scene.
A man in his 20s has been arrested and is being held at Clontarf Garda Station.
The scene has been preserved for a technical examination.
Gardaí have appealed for anyone with information to contact Clontarf Garda Station on 01 666 4800 or the Garda Confidential Line on 1800 666 111.