An investigation has been launched into a fatal assault in County Mayo.

At around 3am this morning, gardaí were called to the scene of an assault at Claremount Manor, Knock Road, Claremorris, County Mayo.

A young man had suffered fatal injuries and was pronounced dead at the scene.

The Office of the State Pathologist has been notified.

A male juvenile has been arrested in connection with this investigation, and is currently detained at Claremorris Garda Station under Section 4 of the Criminal Justice Act.

The scene has been preserved for technical examination.