Militants in eastern Ukraine have shot down two Ukrainian warplanes, the press officer of the anti-terrorist operation (ATO) headquarters, Oleksiy Dmytrashkivsky, has told Interfax-Ukraine.

"We have information about downed fighter planes. The circumstances of what happened are currently being clarified," he said on Wednesday.

Dmytrashkivsky said that there were no reports about the fate of the crewmembers.