Gardai are appealing for witnesses after a man was killed in a crash in Co. Louth last night.

Three other people, including a ten year old girl, were injured in the collision.

The fatal crash happened on the northbound carriageway of the M1 just after Junction 15 Castlebellingham at around 10.30pm.

A man in his 40s who is believed to be from Co. Louth died at the scene.

Two women, who were the drivers of the other cars, and a 10-year-old girl are currently being treated at Our Lady of Lourdes hospital in Drogheda.

A forensic investigation is being carried out at the scene and witnesses are being asked to contact Ardee Garda Station at 041 6871130.