Colin Wells, RSPB site manager on the Dee Estuary Reserve, said conditions on the marsh were very brittle and dry, meaning the fire spread quickly.
Moscow region governor Andrei Vorobyev told Russian state-television that the fire alarm seems to have worked but the fire spread too quickly.
When the pyrotechnics were set off, the ceiling caught fire, state officials said, and the flames spread quickly.
Seven oxygen cylinders being stored in the loft of a house caused the fire which quickly spread to three other properties in the terraced row.
"There were shops selling chemicals on the ground floor, which were caught by the fire as it spread very quickly, " he told the AFP news agency.
The fire had quickly spread to 10 other mats stored nearby, filling the building with acrid noxious smoke.
According to the Associated Press news agency, the fire spread quickly because construction workers had recently applied a flammable wood preservative to the exterior of the building.
BBC: Investigators have not yet disclosed the cause of the fire
The fire is believed to have spread quickly due to dry and windy conditions.
And a lot of the fast food restaurants are missing their employees because those rumors kind of spread very quickly, like fire.
The fire started on the ground floor - which was reportedly used as a warehouse - and quickly spread through the building.
BBC: Dhaka Bangladesh clothes factory fire kills more than 100
Silva added that firefighters and ambulances responded quickly after the fire broke out, but that it spread too fast inside the packed club for them to help.
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