Explosions at a Riverside County high school Friday morning led to the arrest of a student, authorities said.
Police responded to a report of a small explosion inside the boys' locker room at Heritage High School at 9:15 a.m. in the 26000 block of Briggs Road in Menifee, police said.
The Riverside County Sheriff's Department Hazardous Device team arrived, took over investigation and found the explosion was the result of an explosive device from dry ice, authorities said.
Police arrested a student for allegedly being in possession of a destructive device on school grounds and for the explosion of the device on school grounds. He was booked into the Southwest Juvenile Detention Center.
A second student believed to be involved was released to his parents but could face conspiracy charges, officials said.
The school locked down as a precaution.
