KIEV, Dec. 24 – Ukraine's Antimonopoly Committee has determined, following a preliminary antitrust investigation, that Russia's Gazprom occupies a monopolistic position on the Ukrainian gas transportation services market and regularly violated the terms and conditions of its contract with Naftogaz Ukrayiny in 2009-2015.

The Antimonopoly Committee concluded in a preliminary report made public in Kiev on Thursday that Gazprom had ignored any demands that it economically substantiate the terms and conditions of its cooperation with Naftogaz, particularly those concerning the volume of gas transportation across Ukraine and its cost.

"We expect Gazprom representatives to attend the next hearing concerning the possible abuse of monopolistic position," Ukrainian Antimonopoly Committee chief Yuriy Terentyev said.