BREAKING: Ukrainian suicide drones have hit one of Russia’s largest oil refineries — the Yaroslavl facility is now on fire…

Russia’s Slavneft-YANOS oil refinery in Yaroslavl, one of the country’s five largest, was struck in an overnight drone attack on Dec. 12, Ukraine’s General Staff confirmed in the evening of the same day.

“The Defense Forces of Ukraine struck facilities at the Slavneft-YANOS oil refinery in Russia’s Yaroslavl region,” the General Staff said on Telegram.

“This is one of the largest refineries of the occupiers, which is capable of processing from 15 million tons of oil and oil condensate per year. It is involved in providing the armed forces of the Russian invaders,” it added.

Additionally, Ukrainian forces targeted a Russian ammunition depot near the village of Avdiivske (formerly Pervomaiske), as well as Russian personnel concentrations near the towns of Myrnohrad and Rodynske in Donetsk Oblast, the statement added.

Earlier on Dec. 12, residents reported at least seven explosions over the city, followed by reports of a fire at the Slavneft-YANOS refinery, located more than 700 kilometers (435 miles) from the Ukrainian border.

Open-source intelligence (OSINT) said the facility was struck, while Yaroslavl Governor Mikhail Yevrayev had earlier warned of a drone threat in the region.

Astra, an independent Telegram channel based in Russia, posted photos and video of an ongoing fire at the facility on the morning of Dec. 12.

The Slavneft-YANOS plant is a major producer of fuels including gasoline, diesel and jet fuel, with a processing capacity of about 15 million tons of crude per year.

Multiple other regions were targeted throughout the night, including Tver, Smolensk, and Moscow. In Tver, a drone explosion damaged the lower floors of a residential building and injured seven people, according to local authorities.

Moscow Mayor Sergei Sobyanin said Russian air defenses intercepted eight drones approaching the capital.

The extent of the damage remains unclear, and Ukraine has not commented on the reported strike.

Ukraine repeatedly uses homegrown long-range drones to launch attacks on Russia’s oil infrastructure. Russia’s oil and gas production has continued to come under attack as Kyiv attempts to cripple Moscow’s primary source of funding for its war in Ukraine.