Feb 7, 2013 5:29 PM by Associated Press
LOS ANGELES (AP) - The manhunt for a disgruntled former Los Angeles police officer wanted in three killings is expanding.
A U.S. Marshals Service official says the search for Christopher Dorner has spread from California to Nevada, Arizona and Mexico.
The official spoke to The Associated Press on condition of anonymity Thursday because the official was not authorized to comment publicly on the investigation.
Dorner is suspected of killing a former police captain's daughter, her fiance and a Riverside officer. He's also suspected of wounding two other officers.
Three officers were shot -- two in Riverside, one in Corona -- during the search early Thursday for a former Los Angeles Police Department officer wanted in connection with a double slaying in Irvine.
Police said two Riverside officers responded to Magnolia and Arlington after receiving a call for assistance. The response occurred during the search that began with a report of a vehicle matching the description of ex-LAPD Officer Christopher Dorner.
Both Riverside officers were shot and transported to a hospital, where one was pronounced dead. The second officer remained in surgery, police said.
Police could not confirm the gunman was Dorner.
Two LAPD officers also were involved in a confrontation with Dorner in Corona early Thursday, according to police. One of the officer's was shot, suffering what was described as a graze wound.
Dorner is wanted in connection with the double slaying of a newly engaged couple last weekend, Irvine Police Chief David Maggard said Wednesday evening. Maggard said that Dorner implicated himself in a "multi-page manifesto" that was published online but has since been taken down. A source inside LAPD gave NBCLosAngeles.com the manifesto, which is about 11,300 words long and appears to lay out a plan for targeting those involved in his firing.
In the manifesto -- addressed to "America" and titled "Last Resort" -- Dorner writes that the "horrendous murders" are "a necessary evil."
"I know I will be villified [sic] by the LAPD and the media," he writes. "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."
Dorner goes on to say, "There will be an element of surprise where you work, live, eat, and sleep."
Monica Quan, 28, and her fiancé, Keith Lawrence, 27, were fatally shot Sunday while sitting in their car on the top level of a parking structure in the 2100 block of Scholarship Drive, according to Irvine police.
Quan's father was the first Asian-American to become an LAPD captain, and also worked on the Asian Gang Task Force.
In his manifesto, Dorner repeatedly refers to a Randy Quan as being involved in his firing.
Authorities asked for the public's help in finding Dorner, whose last known address is 4931 Sharon Dr. in La Palma. Dorner is described as 6 feet tall, about 270 pounds with black hair and brown eyes.