Rubuta ci gaba don wannan sakin layi - A cikin 1932, an canja ayyukan zuwa sabuwar 'yan sanda na jihar (statspolisen). Rukunin jami'an da ke aiki a ofishin 'yan sandan jihar ba su da hanyar da za su saurari kiran tarho ko kuma su sa ido su buɗe wasiƙu. Wannan, da kuma rashin wadatar ma'aikata da albarkatun kudi sun damu da shugaban hukumar leken asirin Sweden, Laftanar Kanar Carlos Adlercreutz, wanda ya ji kasar tana bukatar wata hukumar tsaro mai karfi idan Turai ta sake shiga yaki. Don haka, a cikin 1938 an kafa Babban Tsaron Tsaro, sakamakon yunƙurin Adlercreutz da Ernst Leche a Ma'aikatar Shari'a, da sauransu. Dukkanin kungiyar da ayyukanta sun kasance na sirri. A lokacin Yaƙin Duniya na Biyu, hukumar ta saka idanu a kan kiraye-kirayen tarho 25,000 kuma ta kama wasiƙu fiye da 200,000 a kowane mako. A shekara ta 1946, bayan yakin basasa
bayan tantancewar majalisa, an rage ayyukan sosai kuma an sake tsara su a karkashin 'yan sandan jihar, galibi ana daukar nauyin aikin leken asiri. A cikin 1965, 'yan sandan Sweden sun zama na ƙasa, kuma duk aikin an shirya shi a ƙarƙashin Hukumar' Yan Sanda ta Kasa a cikin Ma'aikatar Tsaro ("Rikspolisstyrelsens säkerhetsavdelning", a takaice RPS / SÄK).