On the night of January 26, explosions were heard over Ryazan, Russia. The Russians claim that unidentified drones once again attacked an oil refinery, which then caught fire, according to Russian Telegram channels.

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.