Russia bombarded Ukraine’s second-largest city with massive strikes in the early hours of Saturday, its mayor said, one night after Moscow carried out one of the war’s largest aerial assaults on Ukraine.

Russia launched a massive drone and missile barrage across Ukraine in a major retaliatory strike, days after Kyiv damaged key Russian bombers.

Russian forces struck Kharkiv, a city in Ukraine, for an hour on the evening of June 6, using aerial bombs and missiles, according to Oleh Syniehubov, head of the Kharkiv Regional Military Administration.