Police say that 19 people have been killed and another 50 injured after an explosion at the Manchester Arena in northern England, where U.S. pop star Ariana Grande was giving a concert. : x2 g3 ^. w, e* ~4 [) K0 j( {5 j9 Z: g9 A. @/ [4 Q- X
They say they are treating it as a "terrorist incident" as they investigate.