During the G30S, the Sing Ming Hui was disbanded briefly due to its leftist leanings.
Although there is a growing body of Indonesian historians researching the memoirs of political prisoners to reconstruct the political violence that occurred in Indonesia during 1965-66, the role of physicians in post-independent Indonesia, particularly in the G30S incident, remains unexplored in the extant historiographical literature.
It is only in recent times that many people have been prepared to talk about the events following G30S and that gives these sources a special value.
However, by comparing the varying sources that do exist a more complete picture can be obtained than was previously available of what did happen in West Timor and NTT following G30S.
From its earliest days, until its demise following G30S, the PKI succeeded in appealing to a wide variety of people in NTT and was able to convince them that it could respond to their particular needs, whether they were Christians, Muslims, animists, university lecturers, or illiterate farmers.
The governor of NTT following G30S, Brigadier General El Tari, reports that in 1960 the BTI established branches in Kupang, the capital of West Timor, the town SoE, the district Timor Tengah Utara (TTU, North Central Timor), and also on Alor Island.
When the Udayana Territorial Military Commander in Bali, Brigadier General Sjafiuddin, first heard of G30S over the radio he instructed his people to continue working as usual and to 'intensify the unity and integrity between the Armed Forces and the strength of the NASAKOM-based progressive, revolutionary people'.
Amir Tjiptoprawiro, is also named for broadcasting continuously from 1 October to 3 October the Order of the Day made on 1 October by Omar Dani, commander of the Angkatan Udara Republik Indonesia (AURI, Indonesian Air Force), in which he referred favourably to G30S as a movement aimed at protecting the Indonesian Revolution and President Soekarno from subversive elements associated with the Central Intelligence Agency (CIA) of the United States of America.
Events later cited as proof of G30S plans for West Timor
13) In the aftermath of G30S various 'blacklists' were allegedly discovered in Kupang with the names of church leaders and others opposed to the PKI who were to have been liquidated.