Old Field Middle School, pictured in July 20212, is part of...

Old Field Middle School, pictured in July 20212, is part of the Harborfields Central School District and serves students in grades six through eight.  Credit: Amanda Ostuni

A female Greenlawn middle school student was arrested Friday for making a threat of mass harm at her school, Suffolk County police said.

The unidentified student was arrested by Second Precinct Crime Section officers at 4:30 p.m. at Old Field Middle School on Old Field Road, authorities said.

The teen was charged with threat of mass harm, a misdemeanor.

The student made the “threat of mass harm” on Monday and a school official was notified about the incident Friday afternoon and searched her locker, police said.

The teen will be arraigned in Suffolk County Family Court at a later date.

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