Two policemen have been injured during an attack in west Belfast.
One of them suffered a broken jaw and was stabbed in the arm while the other sustained bruising to his back after being attacked by up to 30 people.
The attack took place on the Whiterock Road at about 0200 BST after they had stopped their patrol car to speak to a man who had approached them.
Police said they were investigating what happened and had made no arrests in connection with the incident.
The officer who sustained a broken jaw was taken to hospital for treatment.