Ukraine's security agency says it has killed Russian agents suspected of assassinating a senior officer in Kyiv.

Russia pounded Ukraine with hundreds of drones and missiles overnight and Saturday as part of a stepped-up bombing campaign that killed at least six people and wounded dozens, officials said. Two people died and 26 were wounded when Russian forces overnight attacked the Bukovina area in the Chernivtsi region of southwestern Ukraine with four drones and a missile,

Russia fired 597 drones and decoys, along with 26 cruise missiles, into Ukraine overnight into Saturday, Ukraine's air force said.