Police: Pennsylvania student flashed 2 knives, injured 20

Credit: MGN Online

Police: Pennsylvania student flashed 2 knives, injured 20

April 9, 2014 Updated Apr 9, 2014 at 4:16 PM CDT

A 16-year-old boy "was flashing two knives around" when he injured 19 students and a school police officer who eventually subdued him with the help of an assistant principal at a high school near Pittsburgh on Wednesday, a police chief said.

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