Three children were injured after a police gun went off during an anti-drug programme at a Southern California school.
Tamrin Olden of Chino Police Department said the gun was mounted on a police motorcycle on display at Newman Elementary School when it discharged.
Fire Department spokeswoman Massiel Ladron De Guevara said three pupils were treated for cuts and scrapes but were not hit by gunfire. Two were taken to hospital and one was released to parents.
Police officers were at the school during Red Ribbon Week, a national event aimed at keeping youngsters off drugs.
It was not immediately clear why a loaded gun was on the police bike or why it discharged.