A 65-year-old man in Quebec City died Wednesday night when the oxygen tank that allowed him to breathe caused a fire.
Police are looking at the possibility that the man was smoking at the time of the blaze, which engulfed his body in flames.
Pure oxygen coming from a portable tank can enrich clothing or bedding, causing small sparks or fires to suddenly flare up.
The man died at the scene of the fire, an apartment building in Quebec City.
His son, who was home at the time of the fire, had to be treated for severe shock.
The apartment building was evacuated and a pregnant woman was treated for smoke inhalation.
