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1997 civil war, Kolélas was appointed as Prime Minister in September 1997 and a national unity government was formed; Matéta was retained in that government and promoted to the post of Minister of the Budget and the Coordination of Financial Administration. 1997 civil war, Kolélas was appointed as Prime Minister in September 1997 and a national unity government was formed; Matéta was retained in that government and promoted to the post of Minister of the Budget and the Coordination of Financial Administration. The Kolélas government survived for only one month, however; rebels loyal to Denis Sassou Nguesso captured Brazzaville in mid-October 1997. Matéta fled into exile.