UPPER DARBY, Pa. (CBS) -- Police say a teenager is in custody after an Upper Darby High School student was stabbed multiple times inside the school on Monday morning.
The Upper Darby School District says the student was stabbed in a stairwell shortly before dismissal. According to Upper Darby police, the 15-year-old freshman was stabbed by another student.
"The stabber laid in wait for this kid to stab him," said Upper Darby Police Superintendent Michael Chitwood. "He's stabbed at least one time in the back. Pretty significant stab wound. And he's got a cut on the back of his neck and cut on the back of his head."
The victim is in stable condition at Lankenau Hospital.
"The actual stabbing was not caught on camera, but incidents that led up to the stabbing and after the stabbing were caught on camera, so we have a pretty good idea of what happened," Chitwood added.
Investigators say they believe the students knew each other. No word yet on a motive.
Police say a 14-year-old suspect is in custody and will soon be facing charges of aggravated assault.
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