Gregoire Martin was mayor of Kivumu at the time of the 1994 genocide . He was accused of involvement in a massacre at a site in which 2,000 people died . The judges found him guilty of planning and abetting genocide and extermination . Former Kivumu mayor Gregoire Ndahimana served as a leading facilitator and commander in the slaughter of Tutsis in Kivumu , where an estimated 4,000 Tutsis were murdered , according to the ICTR 's Summary of Judgment . Some 800,000 people , mostly ethnic Tutsis , were killed in the six - month bloodletting .
Gregoire Martin was mayor of Kivumu at the time of the 1994 genocide . He was accused of involvement in a massacre at a site in which 2,000 people died . The judges found him guilty of planning and abetting genocide and extermination . Some 800,000 people , mostly ethnic Tutsis , were killed in the six - month bloodletting .