One pulled the alarm at 1 p.m., said Capt. Francesco Aquila, the officer-in-charge of the department.
"The Fire Department responded, reset it, and a little while later, another student pulled [the alarm]," forcing firefighters to return, Aquila said.
Neither was identified because they're juveniles.
They were served with delinquency complaints of creating a false public alarm, Aquila said.
The case will be heard in the Family Division of Superior Court in Hackensack.
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