UPDATE 11:30AM: MURRYSVILLE, Pa. (AP) - A police chief says 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.

Murrysville Police Chief Thomas Seefeld says the bloody crime scene left behind Wednesday at Franklin Regional High School is “vast” and may take a couple of days to process.

Police haven't named the suspect who was taken into custody but says he's being treated for a minor hand wound.

Investigators haven't determined a motive but say they're looking into reports of a threatening phone call between the suspect and another student the night before.

At least two of the victims were in critical condition, though doctors expect all victims to survive.



MURRYSVILLE, Pa. (AP) - A doctor says some victims of a multiple stabbing at a high school near Pittsburgh have suffered injuries classified as life-threatening, though all are expected to survive.

Dr. Chris Kaufman says two victims were in the operating room and one was awaiting surgery at Forbes Regional Medical Center, a few miles from Franklin Regional High School in Murrysville.

Officials say four students were believed to be the most seriously injured Wednesday morning by a fellow student who stabbed or slashed others, injuring as many as 20.

Westmoreland County Emergency Management spokesman Dan Stevens says not all of the 20 injured were cut by the knife, though most were. Some suffered scrapes and cuts in the mayhem that ensued.

The suspect, a male student, was taken into custody and being questioned.