Sappers of the Vostok battalion of the DPR People's Militia walk on the territory of the Azovstal steel plant looking for unexploded shells and mines in the course of Russia's military operation in Ukraine, in Mariupol, Donetsk People's Republic. The Russian military has fully seized Azovstal plant, including its underground facilities, Russian Defence Ministry spokesman Igor Konashenkov said on May 20.