KIEV, July 4 (Xinhua) -- Russia carried out a major aerial assault overnight Friday, launching a combined 550 drones and missiles across Ukraine, with Kiev sustaining the heaviest damage, said the Ukrainian Air Force.

According to preliminary data, Ukrainian air defenses intercepted 478 aerial targets, including two Iskander-K cruise missiles. However, 63 drones and nine missiles struck targets in eight locations, while debris from downed projectiles landed in 33 sites.

Educational, healthcare and transport infrastructure in Kiev was damaged, local media quoted Interior Minister Ihor Klymenko as saying.