Boy, as yet unidentified, is third child killed by San Bernardino law enforcement in less than two years and second in under a month

Southern California sheriff’s deputies shot and killed a 17-year-old boy with mental health issues after he armed himself with a knife and locked himself inside a bathroom at a home, authorities said on Wednesday.

The teen was being transferred from a hospital, where he had been treated after cutting himself, to a mental health facility when he escaped on Tuesday, the San Bernardino county sheriff, Shannon Dicus, said.

The boy, a foster youth who lived in Hesperia, later showed up at a home in Victorville, about 90 miles (145km) east of Los Angeles, where his sisters live in foster care, Dicus said. Someone at the home called deputies to come arrest him, Dicus added, because he had caused trouble there before.

The teen, who had a knife, locked himself in a bathroom, and deputies tried to get him to come out for about a half-hour, according to the sheriff. But when the boy threatened to harm himself, deputies kicked down the door and tried to apprehend him, Dicus said.