A Ukrainian military helicopter Mi-8 crashed late on Wednesday, killing all four crew members.
Ukrainian land forces confirmed the incident on Thursday, but are yet to reveal the exact cause of the crash.
On its Facebook page, Armed Forces of Ukraine said it lost connection with helicopter late on May 29.
Rescuers and law enforcers are working at the site.

School bus accident in Colombia kills 17, injures 20
Father and son reported behind Bondi shooting that killed 15
Shooting at Australia's Bondi Beach kills 12
Police hold person of interest after Brown University shooting leaves two dead
Hamas says Israel's killing of senior commander threatens ceasefire
Ukraine's Zelenskyy ditches NATO ambition ahead of peace talks
Thailand declares curfew along coast as Cambodia border fighting spreads
India tightens pollution curbs as Delhi's air quality worsens
