The former police officer at the centre of a manhunt after a shooting spree that left three people dead has issued a killing list of "high value targets".
Christopher Dorner vowed "warfare" on anyone working for the Los Angeles Police Department (LAPD), promising an element of surprise by attacking where they work, sleep or eat.
In a long diatribe posted on his Facebook page, Dorner lists a number of "high value targets" and says he will use his military training against them.
Officers have been sent to protect more than 40 potential targets, including police officers and their families.
The LAPD has also pulled officers from motorcycle duty, fearing they would make for easy targets.
"I never had the opportunity to have a family of my own, I'm terminating yours," Dorner says in his online manifesto.
A former Navy reservist who served in Iraq, Dorner also goes into detail about how he was fired from the LAPD for whistle-blowing about what he claims was brutal behaviour by other officers.
The 33-year-old claims the department has not changed since the Rodney King beating incident and that he was out to correct the officers’ "moral compass".
The focus of the manhunt has shifted to the snowy mountains around Big Bear Lake, about 80 miles (130km) east of Los Angeles, where police found Dorner's burned-out pickup truck and tracks leading away from the vehicle.
Dorner is wanted for the killings of Monica Quan, the daughter of a former LAPD captain and her fiance, Keith Lawrence. They were found shot in their car at their condominium in Irvine on Sunday night, authorities said.
Ms Quan, 28, was an assistant women's basketball coach at Cal State Fullerton. Mr Lawrence, 27, was a public safety officer at the University of Southern California.
Ms Quan's father, who became a lawyer in retirement, represented Dorner in front of the Board of Rights, a tribunal that ruled against him at the time of his dismissal in 2008.
Authorities also said Dorner opened fire early on Thursday on police in cities east of Los Angeles, killing an officer and wounding another.
In his Facebook manifesto, Dorner says: "I am here to correct and calibrate your morale (sic) compasses to true north."
He said: "I will bring unconventional and asymmetrical warfare to those in LAPD uniform whether on or off duty. ISR is my strength and your weakness.
"You will now live the life of the prey. Your RD's and homes away from work will be my AO and battle space.
"I will utilize every tool within INT collections that I learned from NMITC in Dam Neck. You have misjudged a sleeping giant.
"There is no conventional threat assessment for me."
He also singles out various celebrities, including Michelle Obama, Mia Farow, Charlie Sheen and Kate Winslet, for praise but does not issue threats against them.
Dorner has a number of weapons including an assault rifle, according to police chief Charlie Beck.
Mr Beck said: "Of course he knows what he's doing; we trained him. He was also a member of the Armed Forces," he said. "It is extremely worrisome and scary."
San Bernardino County Sheriff John McMahon said 125 officers were making door-to-door inquiries and a SWAT team was providing added security for local residents, who have been advised to stay indoors.
Schools were put on high alert while investigators examined the vehicle and combed the area. The hunt has spread across three states and into Mexico.
"He could be anywhere at this point, and that's why we're searching door- to-door," Mr McMahon said, adding the manhunt would continue "as long as we can."
A snow storm was expected in the region with temperatures dropping into the teens overnight.
Throughout the day, thousands of heavily-armed officers patrolled highways throughout Southern California, while some stood guard outside the homes of Dorner's stated targets.
Dorner was fired from the LAPD in 2008 for making false statements. Thursday was the eighth anniversary of his first day at work there.
According to documents from a court of appeals hearing, Dorner was fired from the LAPD after he made a complaint against his field training officer, Sgt. Teresa Evans.
Dorner said that in the course of an arrest Evans kicked suspect Christopher Gettler, a schizophrenic with severe dementia.
Richard Gettler, the schizophrenic man's father, gave testimony that supported Dorner's claim.
After his son was returned home on July 28, 2007, Richard Gettler said he asked "if he had been in a fight because his face was puffy". His son responded that he was kicked twice in the chest by a police officer.