Nzuwonemeye entered the Rwandan Armed Forces, and by 1994 held the rank of major.
The ICTR indictment alleges that between 1990 and 1994, Nzuwonemeye and other officers conspired to exterminate the Tutsi civilians and political opponents, and helped to train interahamwe and militia groups who committed the genocide.
[1] After Habyarimana's death and the start of the genocide, members of the Reconnaissance Battalion commanded by Nzuwonemeye's subordinate, Innocent Sagahutu, "tracked down, arrested, sexually assaulted, and killed" Rwandan Prime Minister Agathe Uwilingiyimana.
They were taken back to Camp Kigali, a FAR encampment, where they were "attacked and beaten" by members of RECCE under Sagahutu's command and were later killed.
[1] During the same operation, the Rwandan Army soldiers took into custody ten Belgian peacekeepers from UNAMIR who had been guarding her house.