Pennsylvania high school stabbing victim has another surgery, considered 'very critical'

PITTSBURGH – Police and doctors at a Pittsburgh hospital say a student injured in a mass stabbing at a suburban high school had surgery again overnight and is in "very critical" condition.

Authorities haven't released the student's name. He's been described by doctors at UPMC Presbyterian hospital as a 17-year-old from Franklin Regional High School in Murrysville.

Doctors say he suffered a stab wound from a large knife that pierced his liver and missed his heart and aorta by millimeters. One of his surgeons, Dr. Louis Alarcon, predicted Wednesday that the boy would need additional surgery. That took place at about 1 a.m. Thursday.

The student is one of at least five in critical condition after police say 16-year-old Alex Hribal stabbed 21 students and a school security guard on Wednesday morning.