Russia says 'massive' drone attack targeted 'industrial enterprise' amid reports oil refinery hit

Russian authorities have said a drone attack caused significant damage to an industrial site in the Nizhny Novgorod region overnight. According to governor Gleb Nikitin, more than 100 drones were destroyed in the Kostovo district. He said early reports indicate no casualties. Telegram war monitoring channels say the Kostovo oil refinery was targeted but the governor has not identified the damaged facility and the strike has not been officially confirmed. Lukoil said the refinery produces diesel and aviation fuel. Nikitin also warned that repair work could lead to temporary power cuts and reduced hot water and heating in some residential areas. The attack comes as Ukraine deals with the effects of Russian strikes on its own energy infrastructure. President Volodymyr Zelenskyy said around 280,000 households were left without electricity, including 200,000 in the Dnipro region and more than 80,000 in the Kiev region.