GREEN TOWNSHIP, Pa. (KDKA) — A security guard at an elementary school in Indiana County is under investigation after police said he accidentally discharged his firearm, shooting a refrigerator in the faculty room on Friday morning.

Pennsylvania State Police say they are investigating an incident involving the accidental discharge of a firearm by an on-duty school security guard at Purchase

The security guard accidentally discharged one round while handling his gun, which hit a refrigerator inside the school’s faculty room, state police said.