Zaur Gurtsiev, Deputy Mayor of the Russian city of Stavropol who led an airborne operation to capture Mariupol, has been permanently removed from the chessboard by an explosion on the night of 28-29 May. A man identified as Nikita Penkov (29) approached the veteran special operations officer, a Russian military hero, and activated a hand grenade which neither of them survived. Prima facie, this appears to be a martyrdom operation against Zaur Gurtsiev, a former Russian paratrooper. Russian authorities suspect Ukrainian involvement. Previous Ukraine GUR missions behind enemy lines utilized escape plans or remote detonation devices. See video of operation in link.