BIG BEAR LAKE, Calif. — Law enforcement officers working in falling snow searched a Southern California mountain Friday for the former Los Angeles police officer accused of carrying out a killing spree because he felt he was unfairly fired from his job.

‘‘We’re going to continue searching until either we discover that he left the mountain or we find him, one of the two,’’ San Bernardino County Sheriff John McMahon said at a midmorning news conference.