In 1996, Pierre Buyoya (Tutsi) again took power through a coup d'état. He suspended the constitution and was sworn in as president in 1998. This was the start of his second term as president, after his first term from 1987 to 1993. In response to rebel attacks, the government forced much of the population to move to refugee camps. Under Buyoya's rule, long peace talks started, mediated by South Africa. Both parties signed agreements in Arusha, Tanzania and Pretoria, South Africa, to share power in Burundi. The agreements took four years to plan.