As reported by Censor.NET, this was announced by the ATO HQ press center on Facebook.
"Today, April 13, two servicemen from military units that fulfill combat tasks in the ATO area, seaside and Donetsk direction, were killed. Preliminary version says the accident was caused by mishandling of weapons. The circumstances are being investigated.
"Ukraine's law enforcers, military prosecutors, and National Police officers are working at the scene.
"Those guilty of the accident will be made accountable under the acting law," the HQ said.
As reported earlier, a soldier shot dead his comrade in a military unit in ATO area on April 3.