One man is in serious condition in hospital while 50 other people were forced out of an apartment building in Ahuntsic-Cartierville at around noon Sunday.
Thirty-five firefighters were sent to the four-storey building, located at 174 Boul. Henri Bourrassa.
According to Yvon Daunais from the Montreal Fire Department, the fire started in the bedroom of one of the fourth-floor apartments due to what he called a smoking device.
A 45-year-old tenant was transported to hospital with second-degree burns on his back.
According to Daunais, the man is considered to be in serious condition in the intensive care unit of Jean-Talon Hospital as he inhaled smoke.
All tenants have been allowed back into the building.
The building sustained about $30,000 in damages.