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. + c% w/ U: p3 L+ n0 {$ S! B- `
3 N. W% z# o9 n+ j6 Q3 s' FThey say they are treating it as a "terrorist incident" as they investigate.