The Special Investigations Unit says that shortly after 2 a.m. Sunday, a York Region police officer pursued a vehicle that the officer had attempted to stop.
The agency says the vehicle left the roadway and drove into the ditch.
It says a 30-year-old man was pronounced dead at the scene.
The SIU is an arm’s length agency that investigates reports involving police where there has been death, serious injury or allegations of sexual assault.
Source: CTV News