Russia says it downed 221 Ukrainian drones launched on its territory overnight, in one of the largest aerial assaults since May.
More than half of the drones were intercepted over the Bryansk and Smolensk regions, south-west of Moscow, where Lukoil facilities were reportedly targeted, the defence ministry said.
Authorities in the Leningrad region stated that 28 drones were brought down. A fire broke out on a vessel in the Baltic port of Primorsk, Russia's largest oil terminal, but authorities reported that it was extinguished without casualties or leaks.
Meanwhile, two civilians were killed in Ukraine's Sumy region when a Russian glide bomb struck a village near the border.
Interceptions were reported across at least nine other regions of Russia, including Kaluga, Novgorod, and the Moscow area, where nine drones were said to have been destroyed. Debris was found across several regions, though Russian officials insisted there had been no casualties.
Seven individuals, including five civilians and two military personnel, sustained injuries when a drone struck a bus in Bryansk, according to the region's Governor, Alexander Bogomaz.
Moscow's figures, which the BBC has been unable to independently verify, suggest Thursday night's attack constituted one of the largest Ukrainian aerial bombardments in over four months.
Russia reported destroying a record 524 drones on May 7. By comparison, Ukrainian officials indicated Russia had deployed 818 drones against their territory in recent weeks.
This aerial assault is being regarded as one of the most significant for the Leningrad region since Russia's full-scale invasion of Ukraine three-and-a-half years ago, prompting temporary suspension of operations at St Petersburg's Pulkovo airport.
Cross-border drone raids have become an increasingly common aspect of the conflict. A sustained Ukrainian drone attack in July led to the temporary closure of all of Moscow's airports.
In recent months, Ukrainian strikes have reached deeper into Russian territory, targeting refineries, fuel depots, and logistics hubs hundreds of miles from the frontlines.
In response, Moscow has intensified its missile and drone attacks on Ukrainian cities and energy facilities as peace negotiations, led by the US, have stalled.
The latest attacks came ahead of a joint military exercise between Russia and ally Belarus set to begin Friday, an event held every four years. This year's exercise occurs shortly after several Russian drones were shot down or fell in Poland, leading Warsaw to describe it as an unprecedented incursion into its airspace.
