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AMBLER, Pa. (CBS) – Police have arrested a student in connection to a school threat made against Wissahickon High School in Ambler. School officials confirmed Monday morning the student who allegedly made the threat was identified and detained by police at the county youth center.

School officials say the threat was discovered in a group text chat between Wissahickon High School students.

“We appreciate the community’s understanding as we sorted through the facts and conducted an extensive, after hours investigation. Safety of staff and students remains our top priority,” tweeted the school on Monday.

School officials say the school will open two hours late on Monday.

The other students have been identified and the investigation is ongoing.