Warren Area High School is on alert.

According to a release issued by the Warren County School District Friday morning, an anonymous, written note was found indicating that an incident may occur at the school building.

The note was not specific about the date and time of the alleged incident.

Police are at the building. At 9:30, there were four law enforcement vehicles in the front parking area.

Warren Area High School Principal Jeffrey Flickner said, “we did have a police presence here. I believe we are safe. We are conducting a normal school day.”

A call blast was sent out by the WCSD at approximately 9:05 am on Friday morning to parents.

“Police are currently investigating the anonymous written note,” according to the release. “Students and staff are conducting a normal school day.”

Further details will be released when they are available.