The fire area is 17,000 square meters (about 200,000 square feet), and it has the highest complexity level.
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The Emergency Service official reported the fire broke out on the roof of the OBI supermarket, a household goods store.
Large explosions in the store were captured on a video published on Telegram. It is thought that gas canisters and paint cans exploded inside the building.
The roof of the store reportedly collapsed as a result of the explosions.
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It was reported in Russian media that a short circuit in a storage area with wooden products caused the fire.
OBI is a German chain of household stores. The business in the Mega Khimki mall was sold to a Russian business man from a symbolic EUR 10 after the German chain pulled out of Russia following its full-scale invasion of Ukraine.
