Russian oil supplies to Hungary and Slovakia could be suspended for at least five days after a Ukrainian strike on a facility in Russia, Hungarian and Slovakian officials said on Friday, in a widening of the fallout of Russia's war in Ukraine.

Ukrainian Foreign Minister Andrii Sybiha neither confirmed nor denied the account of the latest attack but wrote on X that Hungary "can now send complaints and threats" to Moscow, not Kyiv.

A Ukrainian drone strike on Russia's Druzhba oil pipeline has disrupted supplies to Hungary and Slovakia, sparking outrage in the two European countries that still purchase Russian oil through the pipeline.