Austrian utility OMV says supplies from Russia’s state-owned natural gas company Gazprom stopped early Saturday after the company said it would stop payments for the gas following an arbitration award.

Russian gas giant Gazprom continued to pump steady volumes of gas to Europe via Ukraine on Saturday, but supplies to Austrian energy company OMV were halted hours after Vienna said Russia had given notice it would cut off flows.

Austrian integrated oil and gas company OMV announced on Nov. 13 that it had secured an arbitral award from the International Chamber of Commerce exceeding $243 million. This ruling relates to irregularities in German gas supplies provided by Gazprom.