04/09/2014 11:13 am ET Updated Apr 10, 2014

Crime Scene Photos From Murrysville School Stabbing

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Pennsylvania officials say 19 students and one staff member at Franklin Regional High School in Murrysville were injured in a mass stabbing on Wednesday morning.

At least two students are reportedly in critical condition after the attack in the town, 18 miles east of Pittsburgh.

Below are initial photos from the scene of the stabbing.

Pennsylvania High School Stabbing