According to the indictment against him, Sikubwabo played an instrumental role in the murder of Tutsis in the Kibuye region during the genocide, including personally participating in killings.
Menurut tuduhan terhadapnya, Sikubwabo memainkan peran penting dalam pembunuhan Tutsi di wilayah Kibuye selama genosida, termasuk secara pribadi ikut dalam pembunuhan tersebut.