EU monitors are deploying to gas pumping stations across Ukraine as Russia prepares to resume gas supplies to Europe.

Ukraine says it will allow European, Russian and its own experts to track the flow of Russian gas through Ukraine pipelines.

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Kiev had agreed to the monitors in a pact signed early Sunday. Russia had insisted on a written agreement before it would restart gas flows.

Russia's state gas giant Gazprom cut off all supplies to Europe through Ukraine Wednesday amid a bitter gas price dispute. Ukrainian officials say it may take up to three days for gas to reach European countries.

Monitors have been dispatched to gas pumping stations on Ukraine's eastern and western borders.