Russia and Ukraine exchanged large waves of attack drones overnight into Sunday as the two combatants maneuvered ahead of Friday's planned summit in Alaska.

Ukraine has repeatedly attacked sites in the southwestern cities of Saratov and Engels, around 365 miles from the border.

One person was killed, and several apartments and an industrial facility were damaged in a Ukrainian drone attack on the south Russian region of Saratov, the governor said on Sunday. Roman Busargin posted on the Telegram messaging app that residents were evacuated after debris from a destroyed drone damaged three apartments in the overnight attack.