The reported strike comes two nights after Ukrainian forces launched a joint attack against the refinery that allegedly damaged multiple on-site facilities.

Ukrainian drones hit a Russian oil refinery in the city of Ryazan overnight, causing a fire and damaging equipment at one of Russia's biggest refineries, four industry sources told Reuters on Friday.

Ukraine launched drone attacks on Russian regions and a significant oil refinery, destroying 15 drones and two sea drones. The Ryazan region suffered eight attacks, Kursk six, and Belgorod one. Though no casualties were reported,