Ukrainian drones reportedly hit an oil refinery in Voronezh Oblast and an "industrial zone" in Lipetsk Oblast overnight on April 24, according to Russian Telegram news channels.
Russian media reported that a fire broke out at an oil refinery in Voronezh Oblast following a drone attack. Aleksandr Gusev, the regional governor, claimed that Russian air defense shot down four Ukrainian drones over the region.
A drone attack was also reported in Russia's Lipetsk Oblast.
Governor Igor Artamanov claimed that a drone crashed "in the industrial zone of Lipetsk Oblast."
Earlier in the night, Russian officials reported that Ukrainian drones caused fires at fuel and energy infrastructure facilities in Smolensk Oblast.
In recent weeks, Ukrainian forces have launched a series of drone strikes aimed at damaging Russia's oil industry. A large-scale attack against Russian energy infrastructure on April 20 reportedly caused fires at facilities in Bryansk, Kaluga, and Smolensk oblasts.