“The talks are over, their results are yet unknown,” she said.
The contact group on the Ukrainian crisis comprises representatives from Kiev, Donetsk and Luhansk, Russia and mediators from the Organization for Security and Co-operation in Europe (OSCE).
The Skype conference began at about 07:00 GMT on Tuesday. Donetsk People's Republic's (DPR) parliament speaker Andrei Purgin said earlier in the day that negotiators were expected to discuss violations of the agreed upon ceasefire.
On February 12, a deal on the crisis settlement in Ukraine was signed in the Belarusian capital of Minsk. The leaders of Russia, Ukraine, Germany and France specified steps necessary to maintain ceasefire in southeastern Ukraine.
The truce came into force on February 15. The same day, the head of the OSCE Special Monitoring Mission to Ukraine said the ceasefire was generally holding.