Two police officers have fatally shot a 15-year-old boy in San Diego after he pointed what turned out to be a BB gun at them.
A 911 call was made from the parking lot of a local high school shortly before 3:30am on Saturday (local time), asking for police to check the welfare of an unarmed boy.
Police later said the teen had made the call about himself.
When two officers arrived, the boy - who has not been identified because of his age - pulled out a weapon.
Police say he ignored repeated demands to drop the gun. Both officers fired, hitting him several times.
The boy's weapon was later found to be a semi-automatic BB air pistol.
"Our hearts go out to the student, his family and his friends," said a statement from Eric Dill, superintendent of the San Diego Union High School District.
Mr Dill said there would be a crisis response team at Torrey Pines High School on Monday, as well as counselling available at all district schools.