The 17-year-old arrived to his classroom in Waukesha, Wisconsin, and allegedly would not put the gun down, police said.
WATCH THE FULL EPISODES OF ‘WORLD NEWS TONIGHT’:
https://bit.ly/2P5Snrx
WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT:
http://abc.go.com/shows/world-news-tonight
WATCH WORLD NEWS TONIGHT ON HULU:
https://hulu.tv/33iKepm
#WorldNewsTonight #DavidMuir #Wisconsin
source