Updated at 6:39 p.m. LOS ANGELES Police launched a massive manhunt for a former Los Angeles officer suspected of killing a couple over the weekend and opening fire on four officers early Thursday, killing one and critically wounding another, authorities said. Two women were also wounded by LAPD who shot at a pickup truck they thought belonged to the suspect. Ex-LAPD cop accused of going on killing spree The search for Christopher Dorner, who was fired from the Los Angeles Police Department in 2008 for making false statements, began after he was linked to the weekend killing of the daughter of a former police captain and her fiance. That former police captain had represented him during the disciplinary proceeding that led to his firing. A burned-out truck matching the description of a getaway vehicle owned by triple-murder suspect Christopher Dorner was found in the San Bernardino mountains Thursday, CBS Los Angeles reports. Earlier in the afternoon, Navy spokesman Keith Dixon told The Associated Press Naval Base Point Loma in San Diego was put on lockdown Thursday afternoon after someone reported that a man matching Dorner's description was in the area. "He knows what he's doing," L.A. Police Chief Charlie Beck told reporters Thursday at a press conference. We trained him. He was also a member of the armed forces. It is extremely worrisome and scary, especially for the police officers involved. CBS News senior correspondent John Miller, a former head of the LAPD's Major Crimes Division, said on "CBS Evening News" Thursday that Beck's training with the LAPD and the military makes him very difficult for authorities to catch. "This is a very interesting case," Miller said. Essentially he turned [the police's] role inside out. He has taken the hunters, and made them a part of the hunters Early Thursday, police came under fire in two separate shootings in Riverside County, east of Los Angeles. The first occurred in Corona and involved two LAPD officers working a security detail. Police Chief Beck said the officers had gotten a tip that Dorner was in the area. The officers "observed" Dorner, and then Dorner shot at them. One officer was grazed, and they were unable to pursue him because the police car was damaged from bullets. Later, two officers on routine patrol in neighboring Riverside were ambushed at a stop light, said Riverside Lt. Guy Toussaint. One died and the other was in surgery. The Riverside officers shot overnight were not actively looking for Dorner, Toussaint 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. We can't provide a lot of information now because we're trying to capture him," said Cmdr. Andrew Smith. We don't know where he is. We're looking for the public's help to locate this guy. Anybody who sees him or believes they see him or his vehicle should call 911. 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. Beck said at the press conference he had attempted to steal a boat from a boat owner in the same city on Wednesday, but was unsuccessful and fled. Dorner is wanted in the killings of Monica Quan and her fiance, Keith Lawrence, who were found shot to death in their car at a parking structure Sunday night, Irvine police Chief David L. Maggard said at a news conference Wednesday night. Early Thursday morning, officers guarding a target in the manifesto shot and wounded two women in Torrance who were in a pickup. Police said the U.S. Navy reservist may be driving a blue 2005 Nissan Titan pickup truck with a Department of Defense sticker on it. He is believed to be carrying multiple weapons, including rifles.