Authorities are searching for Christopher Dorner, a 33-year-old fired Southern California cop who reportedly posted an online manifesto threatening to harm his former colleagues and their families. Dorner is suspected of killing a police officer, as well as an assistant women's college basketball coach and her fiance.

Former Los Angeles Police Department officer Chris Dorner is shown meeting former LAPD Chief William Bratton in an undated photo. Dorner also was a Navy reservist.

Monica Quan, a 28-year-old assistant women's college basketball coach, was found shot to death in a car on the top floor of a parking lot outside her apartment complex, alongside her fiance Keith Lawrence, 27, on Saturday. Quan was the daughter of retired LAPD Capt. Randy Quan, who Dorner reportedly blamed for his firing.

This photo released by the Irvine, Calif., Police Department shows what police identified as the car of Christopher Dorner, a former Los Angeles police officer who set off a region-wide manhunt. Police were searching for the fired Los Angeles cop who allegedly shot three police officers on Feb. 7, 2013, and is suspected of killing a couple over the weekend.

Police respond in Riverside, Calif., after an officer was killed and another critically wounded in a shootout with former California cop Christopher Dorner on Feb. 7, 2013. Dorner, who has threatened to harm his former colleagues and their families, is also the main suspect in the fatal shooting of a couple whose bodies were found in Irvine, Calif.

Two San Bernardino County sheriff's deputies stand guard near the area where a shooting took place in Riverside, Calif., Feb. 7, 2013.

Police investigators carry evidence bags near the area where a shooting took place in Riverside, Calif., Feb. 7, 2013.

Police surround a blue truck that was shot at by officers in Torrance, Calif., Feb. 7, 2013.

Christopher Dorner, 33, posted this photo of himself on his Facebook page. The former police officer, who is being pursued by authorities in connection with the shooting of three police officers on Feb. 7, 2013, is believed to have access to military uniforms because he served in the Navy.