On 6 January 1965 the government declared that the activities of the Murba Party had been 'frozen'. Murba Party leaders were arrested. The 'freezing' of the Murba Party followed the ban by Sukarno on the 'Body to Promote Sukarnoism' (BPS, in which prominent Murba Party figures had played leading roles). Through its activities in BPS (directed towards the breaking the political influence of PKI), the Murba Party had moved outside the political boundaries of the Nasakom concept of Sukarno's Guided Democracy. Sukarno believed that the BPS campaign had been manipulated by the U.S. Central Intelligence Agency.McIntyre, Angus. The Indonesian Presidency: The Shift from Personal Toward Constitutional Rule. Asia/Pacific/perspectives. Lanham: Rowman & Littlefield Publishers, 2005. p. 45
