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A Salvation Army disaster services vehicle drives past a school bus onto the campus of the Franklin Regional School District where several people were stabbed at Franklin Regional High School, Wednesday, April 9, 2014 in Murrysville, Pa., near Pittsburgh. The suspect, a male student, was taken into custody and being questioned. (AP Photo/Keith Srakocic)
A Salvation Army disaster services vehicle drives past a school bus onto the campus of the Franklin Regional School District where several people were stabbed at Franklin Regional High School, Wednesday, April 9, 2014 in Murrysville, Pa., near Pittsburgh. The suspect, a male student, was taken into custody and being questioned. (AP Photo/Keith Srakocic)

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Fire alarm was pulled during stabbing

A male sophomore is in custody after stabbings at Franklin Regional Senior High School in Murrysville, Pennsylvania.

Fire alarm was pulled during stabbing

A male sophomore is in custody after stabbings at Franklin Regional Senior High School in Murrysville, Pennsylvania.