The explosions that rocked the Ukrainian Defense Ministry's ammo depots in Balaklia in Kharkiv region have destroyed 12 private utility buildings, State Emergency Service Chief Mykola Chechotkin said.

"According to tentative reports, shells and fires have destroyed 12 private utility buildings. The blast wave and shell fragments have hit the roofs of residential and private buildings, a general education school, a rail station, a dairy factory, and other facilities located close to the depots," Chechotkin said during the parliament's Hour of Questions to Government on Friday.

An inquiry has been launched to assess damage done to the buildings and social and critical infrastructure, he said.