Melchior Ndadaye, Burundi's first Hutu president, was assassinated by soldiers on 21 October 1993, three months after taking office. Killings of Tutsi civilians by Hutu supporters of the ruling FRODEBU party followed in much of the countryside, and the Tutsi-dominated army conducted reprisals against Hutu. UNHCR recorded some 700,000 people fleeing to Rwanda, Tanzania and Zaire. The violence became a civil war that lasted until the 2003–05 transition, killing an estimated 200,000 to 300,000 people. From February 1996 the army forcibly concentrated rural populations in guarded 'regroupment' camps, holding around 350,000 people by early 1997 according to the International Crisis Group, a policy repeated around Bujumbura in 1999–2000 and criticized by humanitarian agencies. A UN International Commission of Inquiry reported in 1996 that acts of genocide had been committed against the Tutsi minority after 21 October 1993, and also documented indiscriminate killings of Hutu by the army, gendarmerie and Tutsi civilians.
After soldiers assassinated President Melchior Ndadaye, Hutu killings of Tutsi civilians and army reprisals against Hutu drove mass flight; the army later confined rural civilians in 'regroupment' camps
The 1990 census counted 5.29 million and UN estimates give about 5.9 million for 1993. In the months after President Ndadaye's assassination in October 1993 some 700,000 people fled to Tanzania, Rwanda and Zaire and several hundred thousand more were displaced internally, many into army-supervised regroupment camps that at their height in 1999-2000 held around 350,000 people; the war's death toll is usually put at about 300,000.
The International Crisis Group put the toll at over 200,000 by 1998; figures of around 300,000 are commonly cited for the whole 1993–2005 war. The range reflects the absence of any systematic mortality survey, the mixing of massacre deaths with combat deaths and with war-related disease and hunger, and the difficulty of counting deaths in the regroupment camps.
Documented by the UN International Commission of Inquiry for Burundi and by the International Crisis Group, which described the destruction of dwellings and forced relocation into army-controlled camps.
Burundi, Rwanda, Tanzania