Ukrainian drones attacked energy facilities in Russia's Astrakhan and Volgograd oblasts overnight on Feb. 3, causing fires, according to local authorities. The news comes as Ukraine ramps up long-range strikes against Russian energy infrastructure to stifle Moscow's gas and oil exports that fuel its war chest.

"This refinery is one of the 10 largest oil refineries in Russia in terms of design capacity and is involved in supplying the Russian occupatying army," the General Staff said in a statement.

Ukrainian drones have allegedly attacked the area of an oil refinery and an oil depot in Volgograd. Russian authorities have claimed that falling drone wreckage caused a fire at the oil refinery. Source: BBC News Russian with reference to social media;