Video: Manhunt launched for former LAPD officer turned killer Police said Dorner, 33, implicated himself in the killings with the multi-page "manifesto." In a Facebook post, Dorner said he knew he would be vilified by the police department and the media, but that "unfortunately, this is a necessary evil that I do not enjoy but must partake and complete for substantial change to occur within the LAPD and reclaim my name." Los Angeles police chief Charlie Beck said Dorner had multiple weapons, including an assault rifle. As police searched for him, the Los Angeles area grew tense. The nearly 10,000-member LAPD dispatched officers to protect potential targets. The department also pulled officers from motorcycle duty, fearing they would make for easy targets. Dorner's LAPD badge and an ID were found near San Diego's airport and were turned in to police early Thursday, San Diego police Sgt. Ray Battrick said. We're asking our officers to be extraordinarily cautious just as we're asking the public to be extraordinarily cautious with this guy. He's already demonstrated he has a propensity for shooting innocent people," said LAPD Cmdr. Andrew Smith. Dorner is wanted in the killings of Monica Quan and her fiancé, Keith Lawrence. They were found shot in their car at a parking structure Sunday night, authorities said. Quan's father, a former LAPD captain who became a lawyer in retirement, represented Dorner in front of the Board of Rights, a tribunal that ruled against Dorner at the time of his dismissal, LAPD Capt. William Hayes told The Associated Press on Wednesday.