A massive explosion at a Canadian fireworks warehouse has killed two workers and caused a huge plume of smoke to blanket an area west of Montreal.
A series of explosions spread from the charred building after the initial blast at BEM Fireworks near Valleyfield, Quebec. Images from the scene showed a building near a major highway completely destroyed.
Provincial police said two bodies were found in the wreckage but they did not identify them.
Nearly two hours after the blast, fireworks could still be heard exploding at the scene of the fire that continued to burn out of control hours after the explosion, according to witnesses.
Local fire chief Stephane Massicotte said since the warehouse was filled with pyrotechnics it was difficult to battle the blaze.
"This caused a huge amount of flames and very intense heat," Massicotte told reporters.
He said 150 firefighters were used to battle the flames. Reporters on the ground also indicated that there were no fire hydrants in the vicinity.
"All of a sudden I heard, 'boom, boom, bang,'" Mario Cramerstetter said from his office, which is 1.6 kilometres away from the site.
"Initially I thought it was a bulldozer or a tractor but then we saw a big puff smoke. We kept on hearing popping, fireworks going off all the time."
Cramerstetter said it looked like a small building caught fire first and then spread to a larger storage unit.
"We got really, really, really scared," said Ginette Liboiron, who runs a convenience store across a highway overpass.
"I thought my store was falling to the ground. It shook like you can't imagine... We all went outside to see and saw the big, incredible smoke," she said. "It went high up in the air, then it became black, black, black."
Police ordered the surrounding community of Coteau-du-Lac evacuated. A nearby highway was also closed in both directions.
Police also said low traces of metal materials were found in the surrounding area.
Video captured by a news helicopter showed fireworks igniting inside the remnants of the smouldering building.
According to its website, BEM has been designing and manufacturing pyrotechnics and fireworks for 25 years.
Robert Sauve, the mayor of Coteau-du-Lac, said the business has about 20 employees and the owner lives in the community, less than an hour's drive southwest of Montreal.
"This was a very respectable business, and it seems what happened this morning was an accident," he told reporters.