The General Staff of Ukraine's Armed Forces confirmed an attack overnight that hit Russia's Ryazan Oil Refinery and the Ryazan Thermal Power Plant, leaving them ablaze Thursday morning.

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.

The Security Service of Ukraine (SBU) and Ukraine’s Special Operations Forces (SOS) struck the Ryazan Oil Refinery and the Ryazan Thermal Power Plant in an overnight drone strike on Jan. 24, an SBU source told the Kyiv Independent. The attack was later confirmed by the General Staff of Ukraine’s Armed Forces.