Minutes before school let out at the lower campus of police responded to an emergency call from the school by searching each classroom individually to ensure student safety.
termed the call a "911 hang-up," and said that the search was largely a precautionary measure. Two officers responded to the call and searched each room of the building, reporting the "all clear" back to police headquarters after each room was secured.
By around 3:20 p.m. Tuesday, officers on the scene had secured the area and found no evidence of emergency or foul play. The genesis of the initial emergency call was still unknown as of that time.