Ukrainian gas company Naftogaz says that it has paid $15 million for another month of Russian gas after fears escalated that Moscow could cut off supplies.

Interfax-Ukraine news agency quoted Naftogaz's executive, Andrei Kobolev, as saying that the company had paid for gas supplies from Russia for the month of March. Russia's Ministry of Energy Alexander Novak said Thursday morning that Russia had not yet received any payments.

Following a bruising dispute over prices and debt that raised fears of supply disruptions in Europe, Russia and Ukraine signed a deal in October requiring Kiev to pay in advance for gas shipments. President Vladimir Putin and other government officials warned earlier this week that Russia would cut off supplies to Ukraine by the end of the month barring further pre-payments.