An investigation is under way into a hijacking incident in Dublin in which a car was stolen with a baby still inside.

Gardaí say grey Nissan Qashqai, with a 181 WX registration, was leaving the Phoenix Park Conyngham Road, Islandbridge, at around 11.15pm last night when it was approached by a man armed with a knife.

He threatened the man and woman inside the car and pulled them from it.

He then drove away with a one-year-old child in the back seat before stopping and ordering the couple to take the child out of the car.

The car was then driven from the scene and has not been recovered.