An attack on a Russian oil refinery in Ryazan on Wednesday, May 1, left a primary oil processing unit on fire, according to the Baza Telegram channel. “Tonight, on May 1, drones attacked a refinery in Ryazan,” the message says. One drone crashed on the territory of the refinery, causing a fire at the ELOU-ABT (primary oil processing unit). Allegedly, there were no casualties after the attack. Attack on Ryazan refinery On the night of May 1, a drone attacked the Ryazan region, causing the Ryazan oil refinery to catch fire. Later, as a result of an operation by the Defense Intelligence of Ukrain…