His words were published by Ukrayinska Pravda.
He suggested that we are talking about balloons with corner reflectors.
Ignat said that the Ukrainian air defense radar observes targets moving in air currents at low speed.
Earlier, the chairman of the Joint Chiefs of Staff of the US Armed Forces, General Mark Milley, said that US troops shot down the fourth unidentified flying object in the past few days.
It also became known that fighter jets were raised in Romania because of a weather balloon detected in the airspace.