MURRYSVILLE, Pa. (AP) --UPDATED @ 12:05pm
A police chief says a 16-year-old boy "was flashing two knives around" when he injured 19 students and a school police officer this morning at a high school near Pittsburgh.
Police say someone pulled a fire alarm during the incident and that likely helped students get to safety faster than they would have otherwise.
The officer eventually subdued him with the help of an assistant principal.
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 last night.
At least two of the victims are in critical condition, though doctors expect all victims to survive.
An official says four students were believed to be seriously injured at a high school near Pittsburgh, where a student with a knife 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 at Franklin Regional High School in Murrysville on Wednesday morning.
Stevens says it doesn't appear any students suffered life-threatening injuries. He says all the injured are between 14 and 17 years old.
The suspect, a male student, was taken into custody and being questioned.
Stevens says the suspect used a knife, though he didn't say what kind or why he attacked the others.
Several people were stabbed Wednesday morning at a high school near Pittsburgh, and a suspect was taken into custody, an emergency official said.
Dan Stevens, the spokesman for Westmoreland County emergency management, said five or six people were reported stabbed at about 7:20 a.m. at Franklin Regional High School in Murrysville, about 15 miles east of Pittsburgh.
It wasn't immediately clear if the suspect and the victims are students, adults or a mix of both. It doesn't appear that any of the victims suffered life-threatening injuries, Stevens said, though several helicopters were seen flying people from the scene to area hospitals.
School officials and Murrysville police didn't immediately return calls seeking further details, but the school issued a bulletin on its website saying: "A critical incident has occurred at the high school. All elementary schools are canceled, the middle school and high school students are secure."
The district serves about 3,600 students who live in the bedroom communities of Murrysville, Export and Delmont. The elementary and middle schools are part of the same campus.
The high school was on lockdown, and students were being kept there as a precaution as school and law enforcement officials double-checked the premises. School officials were making arrangements to bus the middle school students home.
District Attorney John Peck said he was monitoring the situation. Detectives from his office were also investigating, though Peck said he had no information beyond that being reported by Pittsburgh television news stations.
-- An emergency official says several people were stabbed at a high school near Pittsburgh and a suspect has been taken into custody.
Dan Stevens, the spokesman for Westmoreland County emergency management, says five or six people were reported stabbed Wednesday morning at Franklin Regional High School in Murrysville. That's about 15 miles east of Pittsburgh.
It wasn't immediately clear if the suspect and the victims are students, adults or a mix of both. But Stevens says it doesn't appear any of the victims suffered life-threatening injuries.
School officials and Murrysville police didn't immediately return calls seeking further details.
Parents have been notified and may pick up their children at the school.
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