Pittsburgh, Pennsylvania -
(NBC News) A 16-year-old Pennsylvania high school student is in custody after an early morning stabbing rampage inside his high school.
Nearly two dozen people were stabbed as the student ran through halls and classrooms of Franklin Regional High School in Murrysville, lashing out with two knives at classmates and staff.
Before it was over 19 students and one adult were injured, many critically with what doctors describe as "deep, penetrating wounds".
Panicked parents rushed to the scene searching for news of their children.
The suspect was eventually confronted and restrained by a security guard and assistant principal.
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