According to the First Deputy Defense Minister of the Donetsk People's Republic, Sergey Shamberin, Ukrainian security forces used chemical bombs during the shelling of the village of Semenovka in Donbass.
Following the firing of such weapons people had to be treated in hospital for poisoning.
Earlier, Russian Foreign Minister, Sergei Lavrov, said that Moscow is concerned about the reports of Ukrainian armed forces using incendiary bombs.
The Ukrainian authorities started a military operation in Donbass last year against local residents who had refused to recognize a coup in February 2014. According to the latest UN data, there are about 6.5 thousand people who have fallen victim to the conflict.