Around 8:30 a.m., students and staff in the school’s lobby heard a loud noise, which prompted a lockdown. Officials said police officers conducted a room-by-room search and then relocated students to the nearby middle school while they investigated to determine what caused a “resonating noise throughout portions of the building.”
A school district spokeswoman said authorities learned a tire on a hand truck had exploded as it was being wheeled through the lobby. It was unclear what caused the tire to explode.
“Safety is the utmost priority of the Hampton Bays School District and we appreciate the participation and support of local law enforcement, staff, and parents in the effective execution of the School District Safety Plan,” the district said in a statement.
Southampton Town police officers and members of the Southampton Town fire marshal’s office also responded to the scene.
Students were returned to the high school shortly after 10 a.m. and classes were expected to resume on a normal schedule.