Two years later, Tombalbaye banned opposition parties and established a one-party system. Tombalbaye's autocratic rule and insensitive mismanagement exacerbated inter-ethnic tensions. In 1965, Muslims in the north, led by the National Liberation Front of Chad (, FRONILAT), began a civil war. Tombalbaye was overthrown and killed in 1975, but the insurgency continued. In 1979 the rebel factions led by Hissène Habré took the capital, and all central authority in the country collapsed. Armed factions, many from the north's rebellion, contended for power.