 His exact function and scope of responsibilities varied during numerous reorganizations of the NKVD-MGB-MVD system; in February 1951, for example, his role was reduced to Internal Troops only; the new MVD never again concentrated as many troops in a single command as it was in 1939.Maslennikov retained his position after the arrest of Lavrentiy Beria (June 1953) and summary executions of Beria and his key associates (December 1953).Alexander Solzhenitsyn mentions a "general Maslennikov" taking part in the appeasement of Vorkuta uprising (July 1953) that soon turned into mass shooting of rioting inmates.