Quebec City gas blast causes man's severe burns

Fifty firefighters were called in to battle a blaze sparked by a natural gas explosion in Quebec City early Friday morning.

Fifty firefighters battled a blaze sparked by a natural gas explosion in Quebec City early Friday morning.

The fire left one man badly burned and another suffering from smoke inhalation.

The explosion, at a building that houses a dry-cleaning businesses and some residential units, happened at around 5:30 a.m. ET Friday in the Lac-Saint-Charles area.

Police said one person was found unconscious near the exit to the business. He was taken to hospital with burns to 25 per cent of his body. His injuries aren't considered life-threatening.

The fire also forced 10 residents out of the building. 

Police set up a wide perimeter around the four-alarm blaze.

The cause of the blast is unknown.