He spread the news to his colleagues at the PETA headquarters, Budi Kemuliaan Dormitory in Jakarta.

From the news, the PETA officers asked four people, including Koento, to meet Sukarno and Mohammad Hatta.

[2][1] After the proclamation of independence, Koento joined the Greater Jakarta BKR Regeiment V and became a subordinate of Moeffreni Moe'min [id].

In 1946, he replaced Moe'min as Commander of the Cikampek V Regiment, Brigade III, Siliwangi Division.

[5] To commemorate Koento's services, his name was immortalized on a street name in Karawang and a monument was erected at the exact spot where he disappeared.