Earlier it was reported that a three-stored building at Kutuzovsky Prospekt was hit by the fire of the third category of complexity.
The cause of the fire, according to preliminary data, was the malfunction of electrical equipment, according to a RIA Novosti source in the emergency services.
"The preliminary cause — faulty electrical equipment," — the source said.
— МЧС МОСКВЫ (@emercom_press) July 21, 2016
"Fire area is 5000 square meters", — stated in the emergencies report published in the microblog on Twitter.
Площадь пожара составляет 5000 кв.метров.
— МЧС МОСКВЫ (@emercom_press) July 20, 2016
An emergencies source told RIA Novosti that helicopters could be used at the onset of dawn to help extinguish the blaze.
There has been no information on casualties or damages.
The fire erupted at a former brewery in the early hours of Thursday.