San Diego's police chief says an officer was shot and killed and another was injured after they made a traffic stop late Thursday. A suspect is in custody.
Both officers were assigned to an elite anti-gang unit, police Chief Shelley Zimmerman said at a late morning news conference. Slain officer Jonathan "J.D." Guzman, who had served 16 years with the force, was a married father of two, Zimmerman said.
The injured officer, Wade Irwin, is in serious condition but expected to live, Zimmerman told reporters. He is also married and has a young child.