The Ontario Provincial Police are under investigation after an officer attempted to stop a motorcyclist who later crashed into two vehicles on Highway 403 in Burlington.
The 27-year-old motorcyclist suffered serious injuries in the collision on October 20, according to Ontario’s Special Investigations Unit, which has invoked its mandate because of the police involvement.
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Ontario Provincial Police: What happened on Highway 403
The incident began at approximately 7 p.m. when an OPP officer attempted to stop the motorcycle on the westbound lanes of Highway 407.
The motorcyclist continued westbound and entered Highway 403 before colliding with an SUV and a van near the Waterdown Road exit.
The rider was taken to hospital with serious injuries.
The SIU said no other injuries had been reported.
Why the SIU is investigating
The SIU is Ontario’s civilian police-oversight agency and investigates incidents involving police that may have resulted in serious injury, death or other circumstances covered by its mandate.
Its investigation will examine the circumstances surrounding the attempted stop, the motorcycle’s movement from Highway 407 to Highway 403 and the collision that followed.
The SIU has assigned an investigator and urged anyone who witnessed the incident or has photographs or video to come forward.
What happens next
The SIU typically gathers witness statements, reviews available video and examines evidence from the collision scene as part of its investigation.
The agency may later decide whether the evidence supports laying criminal charges against an involved officer.
That decision will depend on the findings of the investigation and any available evidence.
The OPP has not been identified as the subject of any criminal allegation in the information released by the SIU.
The investigation remains ongoing.
Witnesses asked to contact investigators
Anyone with information, photographs or video connected to the incident can contact the SIU’s lead investigator through the agency’s public appeals process or by calling 1-800-787-8529.
Drivers who travelled through the Highway 407 or Highway 403 area around the time of the incident may have relevant dashcam footage, even if they did not stop at the scene.
Frequently Asked Questions
When did the Highway 403 motorcycle crash happen?
The collision happened at approximately 7 p.m. on October 20, 2026, near the Waterdown Road exit in Burlington.
What happened before the motorcycle collision?
An Ontario Provincial Police officer attempted to stop the motorcyclist on westbound Highway 407. The rider continued onto Highway 403 before the crash.
How seriously was the motorcyclist injured?
The 27-year-old motorcyclist was taken to hospital with serious injuries. The SIU said no other injuries had been reported.
Why is the SIU investigating the OPP incident?
The SIU investigates incidents involving police that may have caused serious injury, death or other circumstances within its legal mandate.
How can witnesses contact the SIU?
Witnesses with information, photos or video can contact the SIU at 1-800-787-8529 or through its online appeals process.
Fact-Checked: Key facts were checked against the Special Investigations Unit’s official October 21, 2026 news release and official Ontario Provincial Police information.
Disclaimer: The SIU investigation is ongoing, and the preliminary details may change as investigators gather additional evidence.