Ukraine denied Moscow's claims on Sunday that a Ukrainian drone struck the Russian-controlled Zaporizhzhia nuclear plant, as Kyiv launched fresh strikes overnight on Russian energy sites. Ukraine’s General Staff on Sunday said Ukrainian drones had struck the Saratov oil refinery in southwestern Russia, causing a “large-scale fire”. It said the extent of the damage was being clarified, and claimed the refinery has been supplying Moscow’s war effort. The refinery belongs to Russia’s state oil enterprise, Rosneft, and produces diesel and gasoline among other types of fuel. The Russian local governor, Roman Busargin, said Ukrainian drones had damaged “civilian infrastructure”, but did not immediately give details. Ukraine has stepped up its attacks on Russia’s oil and gas facilities in recent months, arguing the energy sector both funds and directly fuels Moscow’s more than 4-year-old invasion. Read moreBaltic Sea strikes: How Ukraine aims to undermine Russia's oil profits from Iran war Drone debris also set fire to a fuel depot in Russia’s southwestern Rostov region, which borders Russian-occupied eastern Ukraine, local Governor Yuriy Slyusar reported on Telegram on Sunday. He said residents of nearby homes were evacuated. Ukraine's General Staff on Sunday confirmed its forces were behind the strike on the facility in the town of Matveev Kurgan. Local authorities there earlier said a drone strike on the depot caused a massive blaze. According to its General Staff, Ukraine ​also struck the Lazarevo pumping station in Russia's Kirov region northeast of Moscow, more than 1,200 kilometres (745 miles) from Ukrainian-controlled land. The station helps ship Russian oil ​from Siberia to Belarus. Local Governor Alexander Sokolov said drones had hit ​a facility in the Kirov region, but gave no details. IAEA confirms drone hit nuclear plant Kyiv denied a Russian claim that a Ukrainian drone struck the Zaporizhzhia nuclear plant in Russian-occupied southern Ukraine, Europe’s largest. Russia’s state nuclear energy company, Rosatom, said on Saturday that the drone exploded after tearing a hole in the wall of a turbine hall. Rosatom’s CEO Alexei Likhachev accused Ukraine of a “deliberate” attack. “This afternoon, a Ukrainian kamikaze combat drone struck the turbine hall building of Power Unit No. 6, resulting in a detonation,” Likhachev said. He added there was no damage to main equipment. Ukraine’s military said it did not target or strike the plant, and described the Russian claim as “yet another propaganda ploy”. A military statement said that it adheres to international humanitarian law and is aware of the "consequences of any actions targeting nuclear facilities”. “Along the relevant section of the front line, there was no active fighting at the time of the incident, and no weapons were used,” it added. The UN nuclear agency confirmed Sunday that a drone had hit the plant, adding that "radiation levels at the site remain normal". The nuclear plant has repeatedly come under fire since Russia's full-scale invasion in February 2022, sparking fears of a nuclear accident. Moscow and Kyiv have blamed each other for targeting the plant on purpose. Read moreWhy the Zaporizhzhia nuclear plant is a sticking point in Ukraine peace talks Elsewhere, Ukraine’s air force said Sunday that it had shot down 212 of 299 drones launched by Russia overnight. It said 14 drones had reached their targets, while drone debris fell in five locations. Russian drones struck the city of Dnipro and an oil refinery in Ukraine’s Rivne region, causing fires, authorities said. Oleksandr Koval, the head of Rivne’s regional administration, said no one had been injured at the refinery, and that emergency services were at the site. (FRANCE 24 with AP)