Ontario's Special Investigations Unit is looking into the death of a man who was found with serious injuries on Yonge Street on Tuesday night.
Police were called to the Yonge Street, between Wellesley to Maitland Streets, to deal with a medical call. Officers found an injured man and moved him onto the sidewalk, where he went into medical distress.
Paramedics raced the man to hospital in critical condition, where he was pronounced dead.
Police closed down a section of Yonge Street for the investigation, but the roadway was reopened as of around 6 a.m.
The SIU looks into all cases of serious injury, sexual assault or death involving police.