A carbon monoxide leak in Gatineau has sent nine people to hospital.
Gatineau Fire say it happened at an apartment building last night at 122 Saint Etienne around 9:15pm.
Crews were called for the smell of gas, and evacuated all six unit in the building upon arrival.
The nine people affected are being treated in hospital for carbon monoxide inhalation.
Crews say the incident was caused due to a faulty heater.