MNPD investigated additional threats to area schools on Thursday and will monitor each location closely out of caution.
WSMV4 Investigates learned that police were not notified by the Omnilert system as it failed to detect the weapon used in the cafeteria.
WSMV4 Investigates learned that police were not alerted by the Omnilert system as it failed to detect the weapon once it was pulled and used in the cafeteria.