After more than 800 people were evacuated from the Lenta supermarket in the Russian city of St. Petersburg on Saturday morning, the roof of the building collapsed on an area of 3,800 square metres.
Although the emergency services managed to localise the fire and there are no immediate reports of injuries or casualties, the blaze rapidly covered an area of about 5,000 sq. metres. One social media user managed to capture the smoke from the fire rising over the city:
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