Kammala jumla mai zuwa: A cikin 1956, Spreti ya zama jakadan Jamus ta Yamma na farko a Luxembourg tun bayan Yaƙin Duniya na Biyu, kuma ya riƙe wannan mukamin har zuwa 1960, lokacin da ya zama jakadan a Cuba (har zuwa 1963), sannan zuwa Jordan (1963<unk>1965) da Jamhuriyar Dominica (tsakanin 1966 da 1968). A ƙarshe an tura shi zuwa Guatemala a lokacin rikice-rikice na
Yaƙin basasa na Guatemala. A ranar 31 ga Maris, 1970 'yan bindigar Marxist-Leninist FAR suka sace shi a Guatemala City kuma aka kashe shi bayan kwana shida. Jamus ta Yamma nan da nan ta yanke dangantakar diflomasiyya da Guatemala. Kwana uku bayan kisan Spreti, wata tawagar kashe-kashen 'yan kwaminisanci mai suna Mano Blanca ta yi ramuwar gayya ta hanyar kashe dan siyasar kwaminisanci César Montenegro Paniagua.