Council Bluffs police arrested two juveniles Wednesday following a small explosion in the Lewis Central High School cafeteria.
Officers were called to the school about 12:45 p.m. to assist the fire department with the explosion, said Sgt. Mark Stuart of the Council Bluffs Police Department. No injuries were reported.
Investigators determined that a commercial grade firework detonated under a table in the cafeteria where several students were eating lunch, Stuart said. Officials initially described it as a homemade explosive device.
The school quickly returned to normal following the explosion.
The names of the juveniles were not released, One was arrested on suspicion of first-degree arson and the other was arrested on suspicion of possession of a explosive or incendiary device.