Gardaí are searching for a man who stole a garda car and drove it across the border into Northern Ireland before abandoning it in south Armagh.

The man was stopped by two gardaí driving near Lusk, Co Dublin, at around 9.30pm last night.

He was arrested on suspicion of drink-driving and placed in the garda car.

However, he managed to get into the driver's seat and steal the car.

He then drove it through the toll bridge outside Drogheda, 60km cross the border, before abandoning it in Co Armagh.

The PSNI is assisting with the investigation.

Gardaí say they believe they know the identity of the man and are confident of apprehending him.