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Franklin Regional High School Students, Administrator Hailed as Heroes During Stabbing Horror

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At Least 20 Injured in Mass Stabbing at High School

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At Least 20 Injured in Mass Stabbing at High School

An assistant principal and several students were hailed as heroes today for their quick thinking during a stabbing spree inside a Murrysville, Pa., high school.

Thomas Seefeld, the Murrysville police chief, said at a news conference that an assistant principal at Franklin Regional High School tackled the 16-year-old suspect, who is now in police custody.

The assistant principal has been identified as Sam King.

Cole Seymour, a junior at the school, described King as "the kind of faculty member that every student in the building could go to."

"He went out of his way to make students feel comfortable and see how they were," Seymour told ABC News.

The police chief said he did not know the motivation for the mass stabbing, but said the carnage could have been a lot worse if immediate action had not been taken.

Read More: At Least 20 Injured After Stabbings at Franklin Regional High School in Pennsylvania

A student, Nate Scimio, pulled the alarm during the attack in order to alert students to leave.

"He knew what was happening... and he wanted the people to get out," Alyssa Finch, a senior at the school, told ABC News.

Scimio suffered two cuts to his arm in the process.

Seefeld said pulling the alarm was a smart move.

"What we teach and try to talk about is first thing you want the students to do is run. And upon my arrival and the arrival of the officers was we saw a chaotic scene outside with people running everywhere. So yes, the fire alarm being pulled probably assisted with evacuating the school and that was a good thing that was done," the chief said.

Finch told ABC News she also heard that yet another student helped subdue the assailant.

As many as 20 people were injured in the early morning stabbing spree at Franklin Regional High School, according to Westmoreland County emergency management spokesman Dan Stevens.

No fatalities were reported, though Stevens said at least four people suffered "serious" injuries.

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