Police were called into sweep Southgate High School Monday morning because of a threat that was found in a bathroom stall.

Southgate Superintendent William Grusecki told Local 4 the threat was found written in pencil. He didn't clarify what the threat was.

Grusecki said the school was put in secure mode, which meant students and teachers were kept in classroom while police conducted their sweep.

The school was given the all-clear and classes resumed normally for the day.

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