19 Students, 1 Adult Injured In Mass Stabbing At Pennsylvania High School. 16-Yr Old Suspect, Charged As Adult With 4 Attempted Murders *Story Updated* [Video/Pics]

Via WTAE

MURRYSVILLE, Pa. —As many as 20 people may be injured at Franklin Regional High School in Murrysville, where a student began stabbing people at the start of the school day on Wednesday morning, according to Westmoreland County emergency management.

One of the patients has been flown to a hospital in a medical helicopter. Forbes Regional Hospital in Monroeville has taken five of the other patients.

The severity of the injuries is not known.

Police have one person in custody but have not released that person's name yet.

Several police cars and ambulances are at the high school. Three medical helicopters are also there.

A student reported that someone came into the school with a knife and started slashing people, including some of his friends. That information has not been confirmed by police.

A woman told Pittsburgh's Action News 4 that her son was in the hall, getting ready for class, when he heard screaming and saw someone stabbing students.

Watch News Report HERE

**UPDATE**

MURRYSVILLE, Pa. (Associated Press) — 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. Seefeld didn't specify whether the suspect reportedly received or made the call.

On Wednesday, Mia Meixner, 16, said the rampage touched off a "stampede of kids" yelling, "Run! Get out of here! Someone has a knife!"

The boy had a "blank look," she said. "He was just kind of looking like he always does, not smiling, not scowling or frowning."

Meixner and Moore called the attacker a shy boy who largely kept to himself, but they said he was not an outcast and they had no reason to think he might be violent.

"He was never mean to anyone, and I never saw people be mean to him," Meixner said. "I never saw him with a particular group of friends."

Michael Float, 18, said he had just gotten to school when he saw "blood all over the floor" and smeared on the wall near the main entrance. Then he saw a wounded student.

"He had his shirt pulled up and he was screaming, 'Help! Help!'" Float said. "He had a stab wound right at the top right of his stomach, blood pouring down."

Float said he saw a teacher applying pressure to the wound of another student.

About five minutes elapsed between the time the campus police officer summoned help over the radio at 7:13 a.m. and the boy was disarmed, the police chief said.

Someone, possibly a student, pulled a fire alarm during the attack, Seefeld said. Although that created chaos, the police chief said, it emptied out the school more quickly, and "that was a good thing that that was done."

Also, a girl with "an amazing amount of composure" applied pressure to a schoolmate's wounds and probably kept the victim from bleeding to death, said Dr. Mark Rubino at Forbes Regional Medical Center.

Public safety and school officials said an emergency plan worked as well as could be expected. The district conducted an emergency exercise three months ago and a full-scale drill about a year ago.