A stabbing attack at Franklin High School in Pennsylvania left at least 20 people injured on Wednesday, ABC News reported.
The frightening spree began at start of the morning at the school, located in Murrysville. Dan Stevens, a spokesman for Westmoreland County, said no deaths have been reported.
Four individuals suffered from serious injuries and had to be flown to hospitals for emergency treatment, Stevens told ABC. Several others were stabbed in the extremities.
Additionally, other victims suffered cuts and scrapes from the attack and did not suffer stab wounds.
It is unknown if a majority of the victims are students or faculty members; two hospitals have listed their patients from the incident between the ages of 15 and 60.
Seven teenagers and one adult were taken to Forbes Regional Hospital, NBCNews.com said. Dr. Chris Kauffman, the trauma director at the hospital, told CNN that some injuries were life-threatening, adding some students were in the operating room.
"These are quite serious injuries," Kauffman said. "These are not superficial in nature."
The alleged stabber, whose name has not been released, is in custody, according to Stevens.
A motive for the incident is unknown.
The Franklin Regional School District uploaded a statement to their website following the attack.
"After a critical incident at Franklin Regional Senior High School this morning, the campus was locked down. Elementary classes were cancelled and high school students were evacuated to the middle school. Law enforcement are working with the school district to manage the situation," the statement read.
