Ex-LAPD cop Christopher Dorner eludes police on mountain manhunt Updated at 9:56 a.m. Despite a massive manhunt that touched three states and Mexico, a heavily armed ex-Los Angeles police officer believed to be behind a rampage that left a police officer and a pair of soon-to-be newlyweds dead remained free Friday. "We don't know what he's going to do," said Cindy Bachman, spokeswoman for the San Bernardino County Sheriff's Department, one of many law enforcement agencies whose primary purpose Thursday became finding 33-year-old Christopher Dorner. We know what he's capable of doing. And we need to find him. As darkness fell, the search that had extended across California from the U.S.-Mexico border through Nevada, from suburban streets to military bases, had narrowed in on a cold, snowy mountain 80 miles east of Los Angeles where Dorner's burned truck was found. Tracks that surrounded the truck led to hours of door-to-door searching around Bear Mountain Ski Resort. CBS News correspondent Ben Tracy reports from Big Bear that teams of police searched all night with no sign of Dorner, also a former Naval reservist and onetime college running back, and authorities admit that the truck could be an elaborate diversion or even a trap. Ex-LAPD Chief: Police "on edge" in hunt for cop killer "He could be anywhere at this point," said San Bernardino County Sheriff John McMahon, who had 125 deputies and police officers and two helicopters searching the community of Big Bear Lake, where a snowstorm and plunging temperatures were expected overnight. On Thursday, law enforcement officials were inspecting a package CNN's Anderson Cooper received from Dorner. CNN spokeswoman Shimrit Sheetrit said that a parcel containing a note, a DVD and a bullet hole-riddled memento was addressed to Cooper's office. Christopher Dorner is seen with former Los Angeles Police Chief William Bratton in this undated picture released by the Los Angeles Police Department. The memento was a coin bearing the name of former Los Angeles Police Chief Bill Bratton, who appeared with Dorner in a picture taken years ago. On "CBS This Morning" Friday, Bratton described Dorner as "an incredibly dangerous individual" and reacted to the damaged coin. "When you see that that coin that was given in friendship and respect has three bullet holes, it's certainly very chilling," Bratton said. Bratton said Dorner's burned truck was probably a diversion to draw authorities to Big Bear while the suspect actually headed south, possibly to San Diego. Up to 16 San Diego County sheriff's deputies spent the night surrounding and searching a rural home after a hoaxer reported Dorner was there. There were people at home but Dorner wasn't one of them, said Lt. Jason Rothlein. Investigators have a pretty good idea who made the call and will be seek criminal charges, he said. CBS News senior correspondent John Miller, a former top LAPD official, reports that Dorner cut off all his cell phones and other connections Jan. 31, indicating that he had spent time planning his alleged rampage. The saga began Sunday night, when Monica Quan and her fiance, Keith Lawrence, were found shot in their car at a parking structure at their condominium in Irvine. The couple had no known enemies and there was no evidence of robbery. The following morning in National City, Calif. near San Diego, some of Dorner's belongings, including police equipment and paperwork with names related to the LAPD, were found in a trash bin. The LAPD was notified of the find, and two days later informed Irvine police of an angry manifesto written by a former officer and posted on Facebook. "We didn't have it very long," Irvine police Lt. Julia Engen said. Obviously it took us a while to digest. The rant promised to "bring unconventional and asymmetrical warfare" to police and named among many others Randal Quan, a former LAPD captain turned attorney who represented Dorner in his unsuccessful attempts to keep the police job he lost in 2008 for making false statements. Randal Quan was also Monica Quan's father. "Bing bing bing, the dots were connecting," Engen said. These names are somehow associated to Mr. Quan, who just lost his daughter the prior day. The dots connected. OK, now we've got a name of somebody to look at. That's when the discovery was connected. On Wednesday night, Irvine and Los Angeles police announced they were searching for Dorner, declaring him armed and "extremely dangerous." Hours later, they learned they were all too correct. Two LAPD officers en route to provide security to one of Dorner's possible targets were flagged down by a resident who reported seeing the suspect early Thursday at a gas station in Corona. The officers then followed a pickup truck until it stopped. The driver, believed to be Dorner, got out and fired a rifle, police said. A bullet grazed an officer's head. Later, two officers on routine patrol in neighboring Riverside were ambushed at a stoplight by a motorist who drove up next to them and opened fire with a rifle. One died and the other was seriously wounded but was expected to survive, Riverside police Chief Sergio Diaz said. Diaz said news organizations should withhold the officers' names because the suspect had made clear that he considers police and their families "fair game." Thousands of heavily armed officers patrolled highways throughout Southern California, while some stood guard outside the homes of people police say Dorner vowed to attack. Los Angeles Police Chief Charlie Beck urged Dorner to surrender at a news conference held amid heightened security in an underground room at police headquarters. While in the Naval Reserves, Dorner earned a rifle marksman ribbon and pistol expert medal. He was assigned to a naval undersea warfare unit and various aviation training units, according to military records, taking a leave from the LAPD to be deployed to Bahrain in 2006 and 2007. He wrote that he would "utilize every bit of small arms training, demolition, ordinance and survival training I've been given," the manifesto read.