HARVARD, Ill. — Two students face several charges for setting off a firework in their high school. 

According to police, the incident happened Tuesday inside a bathroom at Harvard High School in the far northwest suburbs. 

Police say an explosion from a large firecracker inside the boy’s bathroom caused substantial damage and led to an evacuation of the building. 

A 14-year-old and 16-year-old boy was arrested and charged with aggravated arson, criminal damage to state-supported property, one count of mob action and one count of reckless conduct.

No one was injured.