"The Volgograd oil refinery has been hit. It is one of the largest in Russia. Its design capacity is about 14 million tons of oil per year, making it the sixth-largest refinery in Russia. The refinery produces gasoline, diesel fuel, fuel oil, and aviation fuel," Kovalenko said.

Drone strikes were reported across multiple Russian regions, including Nizhny Novgorod, Smolensk, Tver, and Bryansk, igniting fires and triggering air defence responses. While there were no reported casualties, an oil refinery in the city of Kstovo, Nizhny Novgorod, suffered significant damage.

Ukraine says its forces successfully hit an oil refinery in the Russian town of Kstovo, around 800 kilometres (500 miles) from the front lines in eastern Ukraine. Four drones hit a Lukoil company depot,

Ukraine hits second major Russian oil refinery in a week after Zelensky hails Kyiv’s growing long-range drone capabilities as ‘bringing the war back to Russia’