(Murrysville, PA) -- The teen in Wednesday's stabbing spree at a Pittsburgh-area high school is being identified as Alex Hribal.
Amy Warner reports a threatening phone call between the boy and another student may have led to the incident. At least 20 people were injured including a school security guard. Warner says Franklin Regional High School in Murrysville has a very safe reputation and that it didn't have metal detectors. Four students are in critical condition but all are expected to survive.
Murrysville police Captain Rob Liermann identified the knife-wielding teen as Alex Hribal and says he is being charged as an adult.
Reporter Amy Warner says a threatening phone call was made last night between the suspect and another student.
Reporter Amy Warner says Franklin Regional High School is known as a very safe campus.