MOSCOW, May 8 (Reuters) - Ukrainian drones attacked industrial facilities in Russia's Perm region, Governor Dmitry Makhonin said on Friday.

Russia announced a ceasefire for May 8 to 9, when it celebrates the Soviet Union's victory over Nazi Germany and holds a military parade in Moscow.

The Russian Defence Ministry said that 264 Ukrainian drones had been downed between midnight and 0700 Moscow time.