A teenager is critically ill with head injuries after he was found unconscious on a road in Craigavon.
He was discovered by ambulance staff on Lake Road shortly after 3am on Tuesday.
Police said the teenager was discovered on the carriageway close to a pedestrian bridge.
They said they do not know how he sustained his injuries and have appealed for information.
The teenager was wearing blue jeans, white trainers and a black T-shirt and officers have asked anyone who saw him in the area to contact them on 0845 600 8000.