WARSAW, Jan. 8 (Xinhua) -- A dispute between Russia and Belarus over transit fees is causing disruption to oil deliveries from Russia to Poland, the Economics Ministry said Monday.

    Russian oil supplies are delivered to Poland through the Przyjazn pipeline that crosses Belarus.

    The ministry said the disruptions are the result of the dispute between Moscow and Minsk. Belarus announced last week it would charge an import duty of 45 U.S. dollars per metric ton of Russian oil shipped to Western Europe through Belarus.

    The announcement came after Russia decided to impose a duty of 180 dollars for each ton of oil exported to Belarus.

    Poland is making efforts to diversify its energy supplies to reduce its dependence on Russian exports.