A Russian drone struck a multi-storey apartment building in the northeastern Ukrainian city of Sumy early on Thursday, killing nine people and injuring 13, including a child, President Volodymyr Zelenskiy said.

Russia launched 81 Shahed-type attack drones and decoy drones against Ukraine overnight, the Air Force said. Thirty-seven were shot down over 10 oblasts, while 39 were lost in the airspace, according to the statement.