Three Bel Air teenagers have been charged with setting off "soda bottle bombs" on the property of Harford Day School in Bel Air over the weekend.
No injuries or property damage was reported from the incident, which occurred at about 5 p.m. Saturday, according to the State Fire Marshal's Office.
Deputy State Fire Marshals charged two 13-year-old boys and one 12-year-old boy with making and detonating six of the devices on the school's campus in the 700 block of Moores Mill Road.
All the boys confessed to taking part in the incident and said they had learned of the devices on the Internet, according to a press release from the State Fire Marshal's Office.
The boys were charged with six counts of manufacture, possession and use of a destructive device and six counts of reckless endangerment. They were released to the custody of their parents.
The case has been referred to the Harford County Department of Juvenile Services, the release said.
Soda bottle bombs are considered improvised explosive devices and carry a penalty of up to 25 years in jail as well as $250,000 per device.
Deputy State Fire Marshal Bruce Bouch noted the bombs contain "the works," namely, "100 percent toilet-bowl cleaner" that can cause serious harm.
"The construction of these devices is often misrepresented as fun. However, the serious and potential destructive nature of these devices can cause: loss of vision, respiratory distress, loss of use of extremities and possibly death," State Fire Marshal William E. Barnard said in the release.