An oil refinery in the city of Engels in Russia's Saratov Oblast was engulfed in flames after an overnight Ukrainian drone attack on June 6, Russian officials and media outlets reported.
Ukraine has previously targeted the Kristal Plant, an oil refinery in Engels that supplies fuel to Russia's Engels-2 military airfield. The airfield is one of the country's key strategic military bases. It hosts long-range bombers, including the nuclear-capable Tu-95 and Tu-160 aircraft.
Residents shared footage of major fires breaking out in Engels following a drone attack, according to the independent Russian Telegram news channel Astra. Locals reported that the refinery was under attack and that a residential building had been hit.
The Saratov airport imposed restrictions due to the drone threat, according to Russia's Federal Air Transport Agency (Rosaviatsiya).
Saratov Oblast Governor Roman Busargin claimed that a fire had broken out at an unspecified "industrial enterprise" and that emergency responders had been dispatched to the scene. He also said drones caused damage to a residential building. No casualties were reported.
The Russian Defense Ministry claimed that 174 Ukrainian drones were intercepted overnight, targeting 12 regions within Russia as well as Russian-occupied Crimea.
The Kyiv Independent could not confirm these claims.
The reported drone attack comes after a series of major Ukrainian strikes against military targets inside Russia.
