A drone has attacked an oil refinery in Russia's Ryazan Region, preliminary information indicates that there are casualties, regional governor Pavel Malkov said on Wednesday.
"A Ryazan oil refinery was attacked by a UAV. A fire broke out as a result. According to preliminary information, there are casualties," Malkov wrote on Telegram.
Later, a representative of emergency services told Sputnik that three people were injured.
The fire has been extinguished, Malkov said. Russian health agency Rospotrebnadzor specialists did not detect pollutants in the air after the fire, the Russian media reported.
Furthermore, the Ukrainian Security Service has claimed responsibility for the attack on the oil refineries, the Ukrinform news agency reported, citing sources.