One person suffered serious injuries as the result of a snowmobile collision in Lake of Bays Township.
Huntsville OPP are continuing their investigation into the crash that took place around 2:45 on Saturday afternoon.
Police responded to a call of a snowmobile colliding with a tree on Ontario Federation of Snowmobile Clubs (OFSC) Trail D102B near Muskoka Road 117, south of Baysville.
A 43-year-old man from Burlington was taken to hospital and then airlifted to a Toronto-area trauma centre.
Anyone with any information in relation to this investigation is asked to call the Huntsville OPP at 1-888-310-1122 or Crime Stoppers anonymously at 1-800-222-TIPS (8477).