The Lukoil oil refinery in Kstovo, in the Nizhny Novgorod region, was targeted by a Ukrainian attack overnight from Saturday to Sunday, according to Le Monde, which cited Ukrainian media including the RBC news agency.

The regional governor, Gleb Nikitin, reported “a massive drone attack” during the night and on Sunday morning, in which “an industrial enterprise in the Kstovo district suffered major damage,” with no casualties according to preliminary information. Le Monde reported that the plant is one of Russia’s largest refineries, with a capacity of about 17 million metric tons of oil a year, or about 340,000 barrels per day.