A police vehicle is seen outside Franklin Regional High School after reports of stabbing injuries in Murrysville, Pennsylvania April 9, 2014, in this still taken from video courtesy of WPXI. ... more 
A police vehicle is seen outside Franklin Regional High School after reports of stabbing injuries in Murrysville, Pennsylvania April 9, 2014, in this still taken from video courtesy of WPXI. REUTERS/WPXI/Handout via Reuters less 
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Reuters | Photo By WPXI / Reuters
Thu, Apr 10, 2014 12:29 PM EDT