"This refinery is one of the 10 largest oil refineries in Russia in terms of design capacity and is involved in supplying the Russian occupatying army," the General Staff said in a statement.

Ukrainian soldiers are now using a long-range drone capable of traveling up to 2,000 kilometers (1,242 miles) and carrying a 250-kilogram air bomb, the Unmanned Systems Forces said on Jan. 31. The drone is described as a “unique development” and a potential game changer on the battlefield.

Russia and Ukraine exchanged large drone attacks on Sunday night into Monday, with alleged Ukrainian UAVs forcing flight restrictions at three Russian airports.

Ukraine has launched its second major drone attack in a week against Russian oil refineries hundreds of miles from its borders.

Russian Lukoil oil refinery struck by multiple Ukrainian drones, military intelligence source claims Russian assault intensity declines, focuses on Pokrovsk sector, monitoring group reports Australian POW feared executed by Russia is alive,

Four Ukrainian drones hit Russia's Lukoil refinery early Wednesday morning causing fires and significant damage, according to Ukraine's military intelligence. It comes days after Russia's Ryazan oil refinery was hit.

A new drone bomber may have joined Ukraine’s escalating assault on Russia’s oil industry. On Wednesday night or early Thursday morning, drones operated by the Ukrainian 14th Separate Unmanned Aerial Vehicle Regiment struck a pumping station on the Druzhba pipeline along the Russian-Belarusian border in Bryansk Oblast.

On the night of Friday, January 31, the Russian army launched 102 kamikaze drones at Ukraine. Ukrainian air defense forces operated in 12 regions of the country, according to the Air Force of the Armed Forces of Ukraine.