A fatal head-on crash north of Schomberg is being investigated by the Special Investigations Unit.
Police said about 11:40 p.m. on Monday, a police officer began to follow a black Pontiac sedan on Line 6 and Sideroad 20.
After losing sight of the vehicle, police said the officer came upon a head-on crash at the nearby intersection of Fifth Line and Sideroad 20 that involved the same black sedan and a white Volkswagen.
Images from the CTV News Toronto helicopter captured on Tuesday afternoon showed two vehicles in a nearby farmers field that had sustained substantial damage.
A second vehicle, which also sustained serious damage, is seen near the crash site. (CTV News Toronto)
The driver and passenger of the white sedan were transported to hospital. A 36-year-old woman, from Barrie, later succumbed to her injuries. The driver of the white sedan is being treated for non-life threatening injuries.
The alleged driver of the black sedan, identified by police as 23-year-old Ryan Buckley, was arrested and charged with dangerous operation causing death and failing to comply with a probation order.
The Bradford-West Gwilliumbury man is scheduled to appear in court on Oct. 24.