Abategetsi bavuga ko atacotuma bibaza ko ico kibi coba gifitaniye isano n'irindi turirwa ry'urusengero rurwiriyemwo abazungu ryabaye ku wa 31 z'ukwezi kwa gatatu ruherereye mu karere k'amasaha makeya y'urugendo uvuye aho muri ico gisagara.
