Kubona imirwano hagati y'umutwe ugendera ku matwara akaze y'idini ya Islamu wa Boko Haram n'igisirikare cya Nigeria yaravanye abantu benshi mu byabo, byateye impugenge zuko iyo ndwara y'imbasa ishobora gukwirakwira mu buryo bworoshye mu karere kose.
