A Ukraine drone attack sparked a fire at an oil depot in Russia’s southern Rostov region, while drones also attempted to attack the Kirov region, some 1,500 km (930 miles) northeast of the border with Ukraine, authorities said on Wednesday.

“There are no casualties,” Rostov governor Vasily Golubev said on the Telegram messaging app about the attack in the Kamensky district. “Firefighters are extinguishing the fire.”

Russian air defence units destroyed four drones over the region overnight, the Russian defence ministry said, without mention of an attack on the depot.

Earlier, the Baza Telegram channel, which is close to Russia’s security services, said three tanks were burning at the Kamensky oil depot after two drones fell on the area.