Tymoshenko also called some politicians' statements that Naftogaz is in bad financial shape "a political fuss and political provocations." Ukraine's Naftogaz will continue pumping gas into underground storage facilities in July, Prime Minister Yulia Tymoshenko said at a government meeting on Wednesday.

"We pumped 1.1 billion [cubic meters of gas into underground storage facilities] in June and will continue filling up Ukraine's gas storage facilities," she said.

Tymoshenko also called some politicians' statements that Naftogaz is in bad financial shape "a political fuss and political provocations."

She said that Naftogaz will pay for gas on time on the future.