Graffiti Threatens Gun in School Tuesday: Police

More police officers on campus

A Prince William County high school is increasing its police presence Tuesday due to a possible gun threat.

Graffiti in a bathroom stall at Potomac High School in Dumfries, Va., indicated a student was planning to tak a gun to school Tuesday, Prince William County police said.

Additional officers have been assigned to patrol the campus Tuesday.

Prince William County Schools alerted parents Monday evening with a recorded phone call.

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