Six people are in hospital after being exposed to noxious fumes at a fitness centre in Etobicoke, Ont., on Saturday afternoon.
Emergency crews were called to the Goodlife Fitness at 185 The West Mall shortly after 3 p.m., where they evacuated 22 people from the building.
One person is in life-threatening condition, while one other person has serious but non-life-threatening injuries, and four others are being treated for minor injuries.
Toronto Fire is still trying to determine the source of the fumes.