Ukraine's defense intelligence launched long-range UAV strikes against a drone manufacturing facility in the Kaluga region of Russia, with production operations concealed at a different factory, RBC-Ukraine reports,

The Russians were assembling UAVs in workshops of the Kaluga Aerated Concrete plant, according to the sources. Locals reported powerful explosions and a fire at the factory overnight into March 13. Kaluga social media channels mentioned alleged debris falls and a blaze in “industrial enterprise buildings.

Several regions in Russia were rocked by explosions overnight on March 9 as air defense systems responded to incoming drones. Reports indicate that a factory, an industrial plant, and an oil facility in the Ryazan, Lipetsk, Voronezh, and Kursk regions came under attack.