In December 1948, the Dutch launched their
Second Police Action and focused their attack on
Yogyakarta.
Sukarno and
Hatta chose to remain in the city and were arrested. Hearing the president was arrested,
Sjafruddin Prawiranegara, the Minister of Welfare, who was in
Bukit Tinggi met Hasan, then Governor of Sumatra and Colonel Hidayat, Commander of Army and Territory of Sumatra on December 19, 1948. and established the
Emergency Government of the Republic of Indonesia (PDRI), on December 22, 1948, in
Bukittinggi, Sumatra. Sjafruddin served as chairman of the
emergency cabinet. Hasan was appointed as Deputy Chairman of the PDRI, Minister of Home Affairs, Education & Culture and Religious Affairs ad interim. PDRI leaders moved around
West Sumatra in an effort to evade arrest by the Dutch who wanted to abolish the group. In 1949 the PDRI government contacted the leaders of Indonesian forces in
Java and the sixth Republic of Indonesia government ministers in Java who had escaped arrest. Based on the
Roem–Van Roijen Agreement, on July 13, 1949, Dutch troops were to be pulled from Republic of Indonesia regions and their leaders were to be freed. The PDRI would therefore no longer be required, and Sjafruddin Prawiranegara disbanded the PDRI and returned the mandate to the President of Republic of Indonesia. ==Oil companies nationalization==