An update to the serious ATV crash in Middleton.
Police say on Thursday afternoon, three teenagers were riding on an ATV on Bell Mill Side Road when the 15-year-old driver lost control and collided with a tree causing the vehicle to roll.
The driver was pinned under the vehicle until emergency personnel arrived on the scene.
The 15-year-old was then airlifted to a Toronto hospital with serious life-threatening injuries.
A 14-year-old male passenger and 13-year-old female passenger were taken to a nearby hospital with non-threatening injuries.
Police continue to investigate.