On September 17, 1939, Maladziečna was occupied by the Red Army and, on 14 November 1939, incorporated into the Byelorussian SSR. On 4 December 1939, Maladziečna became a part of the newly formed Vileyka Voblast of the Byelorussian SSR. The NKVD expropriated the local school for teachers and set up one of its concentration camps there.