KEVIN BEGOS, Associated Press
MURRYSVILLE, Pa. — A 16-year-old boy "was flashing two knives around" when he injured 19 students and a school police officer who eventually subdued him with the help of an assistant principal at a high school near Pittsburgh on Wednesday, a police chief said.
Murrysville police Chief Thomas Seefeld said the bloody crime scene at Franklin Regional High School, some 15 miles east of Pittsburgh, was "vast" and may take a couple days to process.
Police haven't named the suspect, who was taken into custody and driven from the police station in the back of a cruiser for treatment for a minor hand wound.
Investigators haven't determined a motive, but Seefeld said they're looking into reports of a threatening phone call between the suspect and another student the night before.
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