The Ukrainian official claimed that Russia-backed militants used 82mm-caliber mortars in the attack, later adding Grad rocket fire and 120mm-caliber mortars, Ukraine Today reports.

Over 100 Ukrainian soldiers have been killed since a ceasefire in the Donbas was agreed in Minsk on February, 12.

See’s video section for more of the latest news from Ukraine in video from Ukraine Today, Ukraine’s 24-hour English-language news channel.