Four workers died and two were hospitalized after overnight fires at a plant in Volgograd's southern industrial zone, regional Gov. Andrey Bocharov said Friday, blaming debris from Ukrainian drones^1,2.

Bocharov first described "localized fires" from falling debris, then reported the deaths by morning¹. Reuters, citing the same official, said four were killed and two injured and described the strike as the deadliest on the city so far².

Ukrainian monitoring channels said the fire was at Lukoil's Volgograd oil refinery¹. Reuters noted the city hosts that refinery and other industrial sites, and said unverified social-media video purported to show a large fire there².

The Telegram channel Exilenova+ said this was the 13th attack on the Volgograd refinery since Russia's full-scale invasion of Ukraine began¹. Meduza said Reuters had reported in early October that the plant had halted processing after an earlier drone strike¹. Reuters listed prior attacks including last month, May 29 and July 31².

Lines formed at Volgograd gas stations after the strike, local outlets said, and V1.ru reported that popular gasoline brands at chain stations rose by 50 kopecks overnight¹.

Meduza also reported a separate overnight drone wave toward Moscow: Mayor Sergei Sobyanin said 467 drones flew toward the Moscow region from the evening of Nov. 12 until morning, with most destroyed farther out and 144 neutralized as they approached¹. Arrival and departure limits were imposed overnight at Sheremetyevo, Domodedovo, Vnukovo and Zhukovsky and lifted by morning, Meduza said¹.

Ukraine did not issue an on-record confirmation of the Volgograd strike in the accounts reviewed^1,2. Independent verification of the fire video and of which facility burned was not established in those reports².