According to, 20 students have been injured in a stabbing at Franklin Regional High School in Murrysville, PA.

The stabbing took place at 7:13am Wednesday morning.  

Emergency Management says that of the 20 students injured, four are in serious condition.

Police say the male suspect is in custody, and is reportedly a student at the school.

The Franklin Regional School District posted the following message on their website:

"A critical incident has occurred at the high school. All elementary schools are cancelled, the middle school and high school students are secure. Additional information will be released as soon as possible. Please keep our campus clear of traffic."

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