Drone strikes were reported across multiple Russian regions, including Nizhny Novgorod, Smolensk, Tver, and Bryansk, igniting fires and triggering air defence responses. While there were no reported casualties, an oil refinery in the city of Kstovo, Nizhny Novgorod, suffered significant damage.

Russia says it shot down more than 120 drones overnight, in what would be one of the largest attacks of the war.

Ukraine said it had struck a Russian oil refinery and a microchip factory in a huge drone attack that caused fires at the refinery's production facilities and an oil pumping station.