“The enemy, using the current ceasefire, is improving its position in the engineering plan,” RIA Novosti reports.

Earlier, Russian envoy in the contact group to resolve the situation in eastern Ukraine Boris Gryzlov said that the Russian side as an intermediary will facilitate the exchange of prisoners in the Donbass.

On July 17, members of the contact group agreed on a new indefinite truce between the self-proclaimed republics of Donbass and Kiev from the 21st.