(MURRYSVILLE, PA) — Police have identified and charged a 16-year-old boy accused of stabbing and slashing 21 fellow students and a security guard at a Pennsylvania high school.
Authorities say Alex Hribal was being charged as an adult following the Wednesday morning attack in Murrysville, 15 miles east of Pittsburgh.
He appeared before Magisterial District Judge Charles Conway and was charged with four counts of attempted homicide and 21 counts of aggravated assault. He was shackled by his hands and feet and was dressed in a hospital gown.
The teenager’s family lives in a two-story home with an attached garage in a nice subdivision of large, newer homes there. No one answered the door or phone calls.
Neighbors say the teenager is the younger of the family’s two boys. The FBI was at the house Wednesday night.
Westmoreland County emergency management spokesman Dan Stevens said no fatalities were reported.
At least four people with injuries Stevens described as “serious” were flown to area hospitals for treatment. He said some of the injured suffered stab wounds to the extremities.
Others were not actually stabbed, he said, and some of their injuries were cuts and scrapes.
Alyssa Finch, who said she is a student at Franklin Regional High School, told ABC News a fellow student pulled the fire alarm during the stabbing “because he knew what was happening … and he wanted the people to get out.”
Pennsylvania Gov. Tom Corbett said in a statement that he was “shocked and saddened” by the incident.
“As a parent and grandparent, I can think of nothing more distressing than senseless violence against children. My heart and prayers go out to all the victims and their families,” Corbett said. “I have directed the Pennsylvania State Police to assist local law enforcement in its investigation in any way possible. Other state resources will be made available to the community, if needed. I assure the citizens of Murrysville that they have the full support of my administration.”
The Associated Press and ABC News contributed to this report.