Ukraine and Russia are expected to meet for the third round of negotiations, which both sides had said could take place on Monday.
The location and exact time of the talks are not mentioned yet.
The two delegations last met in the Brest region in western Belarus for two rounds of peace talks and agreed to have humanitarian corridors in place in the embattled cities of Mariupol and Volnovakha to facilitate the evacuation of civilians.
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However, the attempt to evacuate Mariupol failed on Sunday, according to the Kremlin and the International Committee of the Red Cross (ICRC).
Russia and Ukraine traded blame for failing to adhere to the agreed ceasefire.