One person was killed in a two-vehicle collision in Oro-Medonte early Thursday.
OPP said the crash happened at Highway 12 and Stagecoach Road around 5 a.m.
One driver was pronounced dead at the scene. The other driver was airlifted to a Toronto trauma centre.
The deceased has been identified as 66-year-old Irene Ciesielski of Tay Township.
Highway 12 is closed in both directions between Line 12 and Moonstone Road for the police investigation.
Anyone who may have witnessed the collision and has not yet spoken to police is asked to contact Orillia OPP at 1-888-310-1122.