A threatening message was found written on a bathroom wall at Penn High School this week.

Penn officials told parents and guardians the message stated “Last day of school you will all be dead.”

Officials investigated the threat thoroughly and determined the threat was not credible. The school has informed police, who will be present on the final day of school on June 5 as a precaution.

Teachers and staff will also be closely monitoring and supervising student activity. The letter asks parents/guardians to remind children that “if they see something, say something.”