Vladislav Ribnikar Elementary School shooting A boy kills nine people in a mass shooting at an elementary school in Belgrade, Serbia. Serbia school shooting: boy kills nine in Belgrade classroom © Reuters Sources: Reuters
/cloudfront-us-east-2.images.arcpublishing.com/reuters/PM4E4BMN5BKERM7X55CLU7DU3E.jpg "Serbia school shooting: boy kills nine in Belgrade classroom © Reuters")