Following the civil war and genocide, Micombero became mentally distraught and withdrawn. In 1976, Colonel Jean-Baptiste Bagaza, a Tutsi, led a bloodless coup to topple Micombero and set about promoting reform. His administration drafted a new constitution in 1981, which maintained Burundi's status as a one-party state. In August 1984, Bagaza was elected head of state. During his tenure, Bagaza suppressed political opponents and religious freedoms.