Police are appealing for witnesses after a road accident on Friday night.
The crash occured at around 9.20pm on the A952, Mintlaw to Toll of Birness Road near South Mains Auchleuchries.
A red Volkswagen Golf and a black Volkswagen Polo were involved, but a third vehicle, believed to be a red Audi, was also involved but left the scene prior to officers arriving at the scene.
As a result of the collision an 18 year old male suffered fracture injuries and was detained in hospital.
Police are seeking information relating to the identity of the vehicle which did not stop and are appealing for witnesses to the accident and the manner the vehicles were being driven.
Call 101 with details.