Impunzi z'Abanye-Congo ziri mu Nkambi ya Mahama mu Karere ka Kirehe no mu ya Kigeme mu Karere ka Nyamagabe, n'iziba mu nkambi ya Nyabiheke iherereye mu Karere ka Gatsibo, zazindukiye mu rugendo rw'amahoro rugamije kwamagana amagambo yuzuye amacakubiri, akoreshwa na bamwe mu bayobozi b'igihugu cyabo.