A 13-year-old boy is critically ill in hospital after being involved in a collision with a car in a village.
The incident happened as the teenager walked along Mill Road in Great Wilbraham, Cambs, on Monday afternoon.
The boy was taken to Addenbrooke's Hospital in Cambridge, where his condition is described as critical, a police spokesman said.
Officers are appealing for anyone who was in the area at the time of the accident to come forward.