The Ukrainian military claimed to struck an oil depot in Russia's western Kaluga region overnight into Monday.
"As a result of an operation by the Defense Intelligence of Ukraine, a fuel and energy facility in the Kaluga region of Russia was hit overnight," the AFP news agency cited a source as saying.
"The target of the attack was an oil depot of Kaluganefteprodukt JSC, which is involved in supporting Russia's armed aggression against Ukraine," the source said.
Moscow and Kyiv have ramped up drone and missile attacks against cross-border targets, with Russia last week launching its new Oreshnik missile on Ukraine.
The governor of Kaluga, which lies south of the Russian capital, Moscow, said air defense systems in the region had downed eight drones. He confirmed that an "industrial enterprise" had caught fire.
Unverified social media images of the alleged attack showed tracer ammunition in the night sky and a large fire next to two industrial chimneys.
The Ukrainian military also said it hit "a number of important targets" in Russia's Bryansk and Kursk regions, which both border Ukraine.
Source: DW
Bd-pratidin English/Lutful Hoque
