Regional officials in southern and western Russia reported a string of drone attacks near the border with Ukraine and deep inside the country that resulted in no casualties, as the war with Kyiv trudged on Tuesday.

At the same time, the hacking of Russian TV channels and radio stations as well as the temporary closure of St Petersburg’s airport fed suspicion that Kyiv could be behind the disruption.

A flurry of drone attacks on Monday night and Tuesday morning targeted regions inside Russia along the border with Ukraine and deeper into the country, with one drone crashing just 100km away from Moscow, according to local Russian authorities.

A drone fell near the village of Gubastovo, 100km southeast of Moscow, Andrei Vorobyov, governor of the region surrounding the capital, said in an online statement.

The drone didn’t inflict any damage, Vorobyov said. He didn’t specifically describe the drone as Ukrainian, but said that it likely targeted “a civilian infrastructure object”. Russian forces early on Tuesday shot down a Ukrainian drone over the Bryansk region, local governor Aleksandr Bogomaz said in a Telegram post.

He said there were no casualties. Three drones also targeted Russia’s Belgorod region on Monday night, with one flying through an apartment window in its namesake capital, local authorities reported.

Regional governor Vyacheslav Gladkovsaid the drones caused minor damage to buildings and cars but no casualties.

While Ukrainian drone strikes on the Russian border regions of Bryansk and Belgorod that lie north of Ukraine’sSumy region are not unusual, the hits on the Krasnodar and Adygea regions further south are noteworthy.

A fire broke out at an oil depot in Russia’s Krasnodar region, which neighboursAdygea, on Monday, Russia’s state RIA Novosti agency reported. Russian Telegram channels claimed that two drones exploded near the depot.

A drone also exploded overnight over Adygea, which lies some 600km east of Crimea.