using the "supersemar" letter, suharto ordered the banning of pki the following day and proceeded to purge pro-sukarno elements from the parliament, the government and military, accusing them of being communist sympathisers. the army arrested 15 cabinet ministers and forced sukarno to appoint a new cabinet consisting of suharto supporters. the army arrested pro-sukarno and pro-communist members of the mprs (parliament), and suharto replaced chiefs of the navy, air force, and the police force with his supporters, who then began an extensive purge within each service.