 Insiguro yisanamu, Yabwiye abafana ko yarenzwe nibyishimo kubera uko bamwakiriye Undi witwa Sadie Scorah wimyaka 28 wari muri iki gitaramo cyo ku cyumweru, yavuze ko byari bihebuje kubona Ariana Grande agira ubutwari bwo kugaruka aho yarokokeye akaharirimbira nanone. 