The reported strike comes two nights after the Security Service of Ukraine (SBU) and Ukraine's Special Operations Forces (SOS) launched a joint attack against the Ryazan Oil Refinery on Jan. 24. Locals reported sounds of explosions and an attempted drone attack on the refinery shortly before 1 a.m. on Jan. 26, the Russian Telegram news channel Astra said. Ryazan Oblast Governor Pavlo Malkov confirmed that Russian air defense units were repelling a drone attack in the region. Andrii Kovalenko, the counter-disinformation chief at Ukraine's National Security and Defense Council, posted video to his official Telegram channel purporting to show a fire at the refinery after it was hit by drones. Astra confirmed that video footage of the fires circulating online was filmed at the site of the refinery, but said that because of the timing of the strike it was difficult to determine whether the fire was from a new hit or the Jan.