Jennings County High School was placed on lockdown Monday afternoon after staff received a phone threat. Sgt. Andrew Richmond, spokesman for the North Vernon Police Department, says that a staff member at the school received the threat at 2:45 p.m. Sgt. Richmond says the call included “threat of violence involving the school building.”

Police say that School Resource Officer Matt Staples was immediately notified of the phone call. Staples activated a response plan that included mobilizing on duty officers to make a security sweep of the school and surrounding area. Richmond says that no active threats were found and the lockdown was lifted.

The investigation is ongoing.