In his statement on the Telegram messaging app, Oleshchuk did not say what happened to the third missile.
There were no immediate reports from Ukrainian officials of damage or injuries as a result of the attack.
Kyiv, its surrounding region and several others across Ukraine were under air raid alerts for about an hour on Sunday morning, starting at 4:50 a.m. local time (0150 GMT).
Reuters witnesses reported hearing several blasts in and around Kyiv at the time that sounded like air defence systems hitting air weapons.