Thursday's incident came a day after a student was shot at Oakland's Skyline High School. The student is in stable condition. Police say they arrested two juveniles and recovered two firearms. Oakland Mayor Barbara Lee said she was “heartbroken” by “the second shooting on an Oakland campus in one week.”

We have a lot of good leaders in the Oakland Police Department,” Mitchell said. “Jim Beere stood above them all.”

A shooting at Oakland's Skyline High School injured a juvenile on Wednesday, authorities said. Oakland police said the shooting involved three juveniles and happened just before the end of the school day. Two juveniles were quickly located thanks to the help of staff and students at the school, police said.