Videos showed fireballs over a facility in Ryazan, 110 miles southeast of Moscow. Kyiv is seeking to disrupt Russian military logistics and put pressure on the country’s economy by striking its oil industry.

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.

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

Ukrainian military on Sunday said it thwarted 50 of 72 drones launched by Russia overnight and attacked one of Russia's largest oil refineries. Military

Ukraine drones hit an oil refinery east of Moscow in a mass attack on Russia, according to military sources. The oil plant in Ryazan, 120 miles south east of the capital, was targeted, as was a microelectronics production plant in Bryansk, western Russia, according to Ukraine’s military.

Ukrainian defenders have struck the oil refinery in the Ryazan region for the second time this week. They also launched an attack on a forward command post of the Russian forces in the Kursk region, according to the General Staff of the Ukrainian Armed Forces.

Kyiv on Sunday claimed responsibility for an overnight drone attack on a Russian oil refinery, making it the second attack on the same site in less than two weeks. Ukraine's military said that "the Defense Intelligence of Ukraine hit the facilities of the Ryazan Oil Refining Company again.