REUTERS

"According to Ukrainian security services, the DPR militants have developed a plan of provocative actions by September 1. This is a cynical crime - the shelling of schools and other educational institutions in the region and the Ukrainian armed forces will be accused of it," he said.

"The Kremlin-backed mercenaries are planning to use this provocation as a pretext for request to Russia to officially introduce the so-called "peacekeeping forces." We call on everyone to be vigilant, especially the inhabitants of eastern Ukraine," Lysenko said.