Kammala wannan jumla: Da farkon Yaƙin Duniya na II, Nazi Jamus da Tarayyar Soviet sun mamaye Poland, kuma da farko birnin ya kasance ƙarƙashin ikon Soviet
mamayewa, sakamakon yarjejeniyar Molotov-Ribbentrop. An haɗa shi cikin Byelorussian SSR daga 1939 zuwa 1941 a matsayin babban birnin yankin Belastok. An kori mutanen Poland zuwa cikin USSR (Siberia, Kazakhstan, Far North). A yayin mamayewar Jamus ga Tarayyar Soviet a 1941, sojojin Jamus sun mamaye Białystok a ranar 27 ga Yuni, 1941, yayin Yaƙin Białystok <unk> Minsk, kuma garin ya zama babban birnin Bezirk Białystok, wani yanki daban a cikin Poland da Jamus ta mamaye, har zuwa 1944. Mutanen Jamus sun ƙone Babban Majami'a a ranar 27 ga Yuni, 1941, tare da kimanin Yahudawa 2,000 a ciki.