A 16-year-old female was airlifted to hospital Sunday after being ejected from an ATV being driven by a 16-year-old male.
Grey County OPP responded to Edgar Street in Proton Station, Township of Southgate just after 5 p.m. Sunday.
Police say the female suffered serious, life-threatening injuries after being ejected and was airlifted to a Toronto hospital.
The driver of the ATV was treated for minor injuries.
OPP say neither the driver nor the passenger were wearing helmets.
An investigation into the crash continues.