Boy, 12, held in shooting of student at Oakland campus

They found a 13-year-old boy with a gunshot wound, and another boy ran away after the shooting but was quickly taken into custody, Oakland Police Chief LeRonne Armstrong said at a press conference.

The wounded student was hospitalized in stable condition, he said.

Armstrong said both boys were students at the school, which has about 750 students in grades six to 12.

Other details weren't immediately released or remained under investigation.

"It saddens me to even think that a kid would bring a gun to school," Armstrong said. "No parent wants to send their kids to school in the day and then be called saying your kid's been shot. It's the worst thing that you can hear."

"But there's far too many guns on our streets and it's only a matter of time before incidents like this happen," he said, urging family members to turn in guns and "get these firearms out of the hands of these kids."

"Our hearts are with the student who suffered this awful injury and their family," the Oakland Unified School District said in a statement late Monday night.

The district said someone had a gun at school and a round was "discharged" but added it was unlikely to provide more information or correct rumors during the ongoing police investigation.

Counseling would be available to students and staff when school reopens Tuesday, the district said.

"Violence across our nation and here in Oakland has been on the rise, and this is an example of how problems in the community can reach into the schools," the statement said. "We must come together to address guns and violence in our Oakland community and with our youth."

The teachers' union said educators were "shaken, sad, horrified, and stressed."

"We are committed to do whatever it takes for this to never occur again," said Keith Brown, president of the Oakland Education Association, which according to its website represents nearly 3,000 Oakland district teachers, counselors, nurses, psychologists, librarians, speech pathologists, social workers and teacher substitutes.

"Educators have major concerns over the resources that are readily available to support the needs of our students," Brown's statement said. "Our public schools should be safe havens for students, free from the fear of gun violence."