An explosion and fire destroyed the third floor of a three storey residential building in the Villeray district in the northern end of the city.
Firefighters were called to a general alarm fire at 7563 Christophe Colomb near Villeray. The third floor ended up collapsing onto the second.
A 45-year-old man living on the third floor got out with minor lower body injuries.
Another resident was reported missing at the time.
About 30 residents in neighbouring buildings were evacuated.
Over a hundred firefighters were called to the scene.
No word yet on the cause of the fire.