Ukraine said on Tuesday it had struck an oil refinery near Moscow and a facility in Russia's Oryol region that is part of the Druzhba pipeline system exporting oil to Europe.
Hungarian Foreign Minister Peter Szijjarto said on Tuesday that crude oil shipment via the pipeline was suspended after a Ukrainian drone attack on a metering station.
"Explosions were...recorded in the area of the Steel Horse linear production dispatch station (Oryol region, Russia), which manages technological processes for the Druzhba oil pipeline," Kyiv's General Staff said in a statement.
It added that the facility was "an important component in supplying oil to the terminal of the Ust-Luga seaport in the Leningrad region".
Russian officials said on Tuesday that Ukraine had launched its biggest ever drone attack on Moscow, killing at least three people and causing a short shutdown at the Russian capital's four airports.
Hungary imports most of its crude oil via the Druzhba pipeline, which transports Russian crude through Belarus and Ukraine to Hungary and Slovakia.
