MOSCOW (REUTERS) - Russian gas exporter Gazprom said on Monday it would continue to supply European consumers with gas at "full volume" and Ukraine's state-owned Naftogaz should make sure it transits through the country.

"The gas for European consumers is being delivered at full volume and Naftogas Ukraine is required to transit it," Gazprom spokesman Sergei Kupriyanov told reporters.

Earlier on Monday, a deadline passed for Gazprom and Naftogaz to agree how Ukraine would settle its gas debts and what it would pay for future supplies.

Around 15 per cent of Europe's gas comes from Russia via Ukraine.