Update…They found shithead’s pickup in the mountains.

LOS ANGELES — An ex-Los Angeles police officer who authorities say went on a deadly shooting rampage to punish those he blamed for his firing killed three people, setting off a manhunt that stirred fear across several states and Mexico.

The search for Christopher Dorner focused late Thursday on Big Bear Lake, about 80 miles east of Los Angeles, where police found a burned-out pickup truck that belonged to Christopher Dorner. San Bernardino County Sheriff John McMahon said officers were going door to door looking for him.