The oil depot in Sirius was attacked, said the head of the administration of the federal territory Dmitry Plishkin in the telegram channel.
"There was a hit on the tank farm," he wrote.
Plishkin warned that there is a danger of a UAV attack on the territory.
"Take precautions, do not go near the windows. I will inform you separately about the completion of the threat," he concluded.
Earlier on Thursday night, explosions thundered in Sirius. As explained to RIA Novosti in the press service of the federal territory, this is due to the work of air defense. At the same time, the agency's correspondent clarified that the sounds of at least five explosions could be heard in Sochi.