SF cops shoot knife-wielding autistic boy, 13, with bean bags

A 13-year-old San Francisco boy was taken to the hospital following a 16-hour standoff that ended Tuesday afternoon when police fired nonlethal bean bags at him. A 13-year-old San Francisco boy was taken to the hospital following a 16-hour standoff that ended Tuesday afternoon when police fired nonlethal bean bags at him. Photo: Ron Chapple / Getty Images / / Getty Images Photo: Ron Chapple / Getty Images / / Getty Images Image 1 of / 1 Caption Close SF cops shoot knife-wielding autistic boy, 13, with bean bags 1 / 1 Back to Gallery

A 16-hour standoff between police and a 13-year-old autistic boy armed with a knife and barricaded in the garage of a San Francisco home ended Tuesday afternoon when officers shot the teen with a nonlethal bean-bag gun and rushed in to detain him, officials said.

Around 1 p.m., police shot the boy with bean-bag rounds and he was taken to a hospital and treated for injuries, said Officer Giselle Talkoff, a San Francisco police spokeswoman. His condition was not immediately released.

The incident started Monday night when the boy got into an argument with his parents in their home on Cumberland Street in the Mission District, near Dolores Park, Talkoff said. At the height of the squabble, he took a knife, went into garage and refused to come out, police said.

Officers with training in crisis intervention, hostage negotiators and a SWAT team arrived at the scene in the 200 block of Cumberland shortly after 9 p.m.

Negotiators tried talking to the teen from a safe distance throughout the standoff. Police also sent a robot inside the home to check on the boy’s well-being, Talkoff said.

The teen came outside twice and brandished the knife to officers, she said. When he emerged from the garage the second time, officers fired the bean bags at him and rushed in with defensive shields.

“Luckily we were able to stand it out,” Talkoff said. “Everything kind of came to a peaceful resolution.”

Jenna Lyons is a San Francisco Chronicle staff writer. Email: jlyons@sfchronicle.com Twitter: @JennaJourno