Pennsylvania officials sought a motive on Thursday for a stabbing rampage at a high school after a 16-year-old student was accused of wielding two knives and wounding nearly two dozen people.
The attacker stalked through Franklin Regional High School in Murrysville near Pittsburgh on Wednesday, stabbing victims in the torso and slashing their arms and faces before being tackled by an assistant principal, officials and students said.
Murrysville Police Department Captain Rob Liermann said a 16-year-old sophomore was taken into custody and charged with attempted homicide.
He had had no psychiatric or disciplinary problems, and his family described him as a good student who mingled well with others, family attorney Patrick Thomassey told ABC News.
“His parents are devastated and send their condolences to everybody involved,” Thomassey said. “They can’t figure it out.”
While the United States has seen a series of large-scale shootings in public places in recent years, including schools, movie theaters and shopping areas, mass stabbings are less common.
Police and the FBI on Wednesday searched the suspect’s home. Neighbors said both parents work, and the teen has a brother who also attends Franklin Regional High School.
A classmate described him as a quiet loner.
The high school will be closed for the next two to three days while police conduct an investigation, officials said.
The victims were aged mostly 14 to 17 years. Several had life-threatening injuries, hospital officials said.
Twenty-one students and a security officer were stabbed in the incident, said Dan Stevens, a spokesman for Westmoreland County emergency management.
One 17-year-old was left severely injured after a knife passed through the liver, diaphragm and major blood vessels, though it missed his heart and his aorta.
On Wednesday evening community members held candle-light vigils for the wounded.
Among them was 14-year-old Mikala Boyer who said she fled as the attack unfolded, but her friend was badly injured.
“Someone came running down the hallway screaming ‘this kid has a knife and he’s stabbing people’ … I ran outside into the woods behind the school,” she said.
The teen faces four counts of attempted homicide and 21 counts of aggravated assault, police said. He was ordered to face a preliminary hearing in seven to 10 days.