Some 16,000 square kilometers are mine-contaminated / Photo from UNIAN

"Since the beginning of the Russian Federation's armed aggression in Donetsk and Luhansk regions, the casualties as a result of the detonation of landmines and explosive remnants of war are 833 civilians – 269 have been killed and 564 have been injured," chief of the Ukrainian Defense Ministry's department for environmental safety and mine clearance Maksym Komisarov said at a briefing in Kyiv.

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"As many as 125 of them [total casualties] were children: 27 have been killed and 98 have been injured," he said.

According to him, about 16,000 square kilometers in Luhansk and Donetsk regions, including Russia-occupied districts, are contaminated by landmines and other explosive objects.