A Ukrainian air defense missile was presumably launched at the moment, and an explosion was heard one minute later, the coordinator said, adding that he had not received any exact information on the matter yet.
"A report from Kharkov: 'Kharkov, 03:20 a.m. local time [00:20 GMT], explosions in Kharkov. They are loud in the western district. A siren went off due to the explosions, ambulances are rushing to the western part of the city without sirens, but with flashing lights'," Lebedev said.