MANCHESTER - If you are dropping your child off at Manchester High School Tuesday morning, you may notice some extra police officers at the building.
The extra show of security comes as police look into a threat that was written on a bathroom stall.
The graffiti said "I'm going to blow this place up September 13th on Tuesday 2016."
The Manchester Police Department and Manchester High School staff are reviewing school surveillance video and interviewing students about the graffiti.
The principal of Manchester High School, Jill Krieger, sent out a note about the graffiti and said her main priority is the safety of students and staff.