A traffic stop late Thursday night led to a shooting that killed a San Diego police officer and wounded a second officer and a suspect in Southcrest, where police searched for hours for other possible suspects. The names and service history of the male officers, both part of the department’s gang suppression unit, were not released. The slain officer suffered multiple gunshot wounds and died at a hospital despite life-saving efforts, San Diego Police Chief Shelley Zimmerman said early Friday. The wounded officer underwent surgery early Friday and was expected to survive.