 Nyorera kupfuurira kweiyi ndima - Muna Zvita 1964, Chairul Saleh weMutambo weMurba wakaumbwa neyaimbova mutungamiri wePKI Tan Malaka akataura kuti PKI yakanga ichigadzirira coup. PKI yakadaidzira kurambidzwa kweMutambo weMurba, uyo wakaiswa naSukarno mukutanga kwa1965. Muchirevo cheKonfrontasineMalaysia, PKI yakadana kuti vanhu vawaniswe zvombo. Zvikamu zvikuru zvemauto zvakaramba izvi, uye Sukarno akaramba asina kuzvipira. Muna Chikunguru, nhengo dzePKI dzinosvika zviuru zviviri dzakatanga kudzidziswa zvechiuto pedyo neHalim Air Force Base; pfungwa yekurwisa vanhu yakanga yawana rutsigiro pakati peAir Force neNavy. Musi wa 8 Gunyana, varatidziri vePKI vakatanga kurwisa kwemazuva maviri kumuzinda weU.S. muSurabaya. Aidit akataura pamusangano wePKI musi wa14 Gunyana, achikurudzira nhengo kuti dzirambe dzakangwarira zvinhu zviri kuuya. Musi wa 30 September, Pemuda Rakyat neGerwani masangano ose ari maviri akabatana nePKI vakaita musangano mukuru muJakarta kupikisa dambudziko remari. 