A cyclist has been seriously injured after being hit by a car near Banbridge.
It happened on the A1 Dual Carriageway shortly before 5 yesterday evening.
The driver of the car was arrested on suspicion of driving offences but has since been released on bail.
A PSNI statement said:
Police investigating a collision on the A1 Dromore Road, Banbridge on Friday 16 August are appealing for witnesses.
A male cyclist was struck by a car close to the quarry on the northbound carriageway at around 4.45pm. The 53 year old was taken to hospital for treatment to injuries that were believed to be serious.
The 31 year old male driver of the Mini Clubman involved in the collision was arrested on suspicion of driving offences. He was subsequently released on police bail.
Anyone who witnessed the crash or who captured dashcam footage is asked to make contact with police by calling 101, quoting reference 1481 16/08/19.