SAN DIEGO - San Diego police were on heightened alert for the second consecutive day Friday as law enforcement throughout Southern California searched for Christopher Jordan Dorner, a fired Los Angeles Police Department officer suspected in the revenge slayings of a college basketball coach and her finance in Irvine and the ambush killing of a Riverside police officer.
10News learned that San Diego police doubled up as they went on patrol. Every vehicle out of the San Diego Police Department headquarters will have two officers in it, according to police.
Meanwhile, 10News learned that a Friday morning report of Dorner in Lakeside, which prompted a full response from the San Diego Sheriff's Department, may have been a hoax.
Deputies received a call from a person who reported seeing a suspicious man with a gun at a residence on Ketull Uunyaa Way shortly before midnight.
The caller also told authorities someone had been tied up and referenced Dorner. Authorities blocked off and searched the area around Ketuull Uunyaa Way and Wild Canyon Road.
As of 4 a.m., 10News learned that the call may have been a form of "swatting," where a caller tricks emergency and law enforcement agencies into responding to a scene.
On Thursday, the massive manhunt for Dorner focused in San Diego for much of the day after his LAPD badge and identification were found near Lindbergh Field and a possible sighting of the suspect was reported at Navy Gateway Inn and Suites.
The hotel sits next to the Naval Base Point Loma Naval Mine and Anti-Submarine Warfare complex, which was placed on lockdown for several hours amid the manhunt. By mid-afternoon, the search moved onto San Bernardino County after Dorner's pickup was found burning just off a forest road in Big Bear.
Police continued to comb the mountainous Big Bear area today and were also maintaining security details aimed at protecting colleagues named as targets in a manifesto written and posted online by the suspect, authorities said.
Read More: Full copy of Dorner's manifesto
All the areas where someone could have walked away from the truck were being searched by ground and the hunt was continuing throughout into early Friday, said Cindy Bachman of the San Bernardino County Sheriff's Department.
A winter storm was expected to bring up to four inches of snow to the Big Bear area Friday, according to the National Weather Service, but it was unclear if Dorner has ventured into the rugged terrain or if the truck was set ablaze as a feint. Bachman said she was not aware of any vehicle having been stolen since the burned out truck was discovered.
Deputies have gone to about half of the 400 vacation homes in the area and there were no signs of forced entry at any of them, Bachman said late Thursday. The pickup truck discovery led to the lockdown of Big Bear-area schools and the closure of the Bear Mountain ski resort, but the schools and
resort were to be open Friday, she said.
Dorner -- a U.S. Navy reservist whose last known address was in the 4900 block of Sharon Drive in La Palma -- is black, 6 feet tall and weighs 270 pounds.
Anyone encountering him should consider him "armed and extremely dangerous" and should not approach or try contacting him but instead call 911 immediately, police said. A tip line has been established, (949) 724-7192. People can also call Riverside police at (951) 787-7911.
The LAPD has been on a full tactical alert, which extends officers' shifts, since shortly after the Thursday morning shootings in Riverside County of three police officers, one of whom was killed, said Officer Christopher No of the LAPD's Media Relations Section.
Numerous officers have been standing guard outside LAPD headquarters in downtown Los Angeles since Dorner, 33, was identified Wednesday night as the suspect in the slayings of 28-year-old Monica Quan and her finance, 27-year-old Keith Lawrence, who were found shot to death at 9:10 p.m. Sunday in a parked
car at 2100 Scholarship in Irvine.
The couple was inside Lawrence's Kia, which was parked at the top of the five-story parking structure of the building where they lived.
According to police, Quan was the daughter of a retired LAPD captain who represented Dorner at the Board of Rights hearing that led to his firing, and the killings were carried out in an act of revenge outlined in the lengthy
manifesto, which blames Quan's father for losing his job.
Dorner was hired by the LAPD on Feb. 7, 2005, and he was fired Sept. 4, 2008, for allegedly making false statements about his training officer, police said.
After Dorner was named as the suspect in the Irvine killings, his gray Nissan Titan pickup truck was spotted around 1:20 a.m. Thursday in the Corona area by a resident who alerted a pair of LAPD officers en route to protect someone named in the manifesto.
The officers were trying to catch up to the vehicle near Interstate 15 and Magnolia Avenue