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Pittsburgh School Shooting

In this aerial image provided by KDKA-TV, emergency personal head to the scene near Brashear High School in Pittsburgh, Wednesday, Nov. 13, 2013. Pittsburgh police reported Wednesday that three people were shot near the school. The condition of the person in the stretcher was unknown Wednesday. (AP Photo/KDKA-TV)

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Pittsburgh School Shooting

Police investigators go over the scene, Wednesday, Nov. 13, 2013, near where three students were shot outside a Pittsburgh high school in Pittsburgh, Pa.Pittsburgh school district spokeswoman Ebony Pugh told The Associated Press all three students were shot outside Brashear High School on Wednesday afternoon as they walked to a vehicle they'd all taken to school earlier in the day. Pugh and police spokeswoman Diane Richard said the injuries appear to be non-life-threatening, though their descriptions of the injuries differed slightly. (AP Photo/Gene J. Puskar)