SAN DIEGO (CBS 8) - The intense manhunt continues for murder-suspect Christopher Dorner.
Harbor police and military law enforcement were on high-alert Sunday night after a man reported seeing someone who looked like Dorner lurking around a boat dock.
Heavily-armed response-teams searched the area, but didn't find anything.
Authorities also announced Sunday they are offering a $1 million reward for information leading to the arrest and conviction of fugitive ex-cop Christopher Dorner.
[Public Tip-Line: 1-213-486-6860 / 1-800-222-8477]
On Monday, the Riverside County DA filed murder charges against Dorner that could lead to the death penalty.
This is the largest local reward ever offered. San Diego's Police Officers Association reportedly donated to the cause.
Officials made the announcement during a press conference Sunday afternoon, saying this is not about catching a suspect, but preventing a future crime.
In the meantime, the massive search continued as more clues surface about Dorner's whereabouts.
In surveillance video captured Monday in National city, Dorner is seen dumping supplies, one day after he allegedly killed his first two victims in Irvine.
The owner of an auto parts store in National City describes what an employee found in his dumpster, where Dorner appears to have tossed bullets and other potential evidence.
"He came back with a clip, like a magazine, full of bullets, a belt, a military belt, and a helmet," said the owner. "And he brought it to me and I said where did you find it? He said I find in the back of the dumpster."
[Complete AP report in the manhunt for Christopher Dorner.]
Saturday, Customs and Border Protection agents said they are assisting in the search for Dorner, and proceeded to shut down some lanes at the San Diego-Mexico border.
Heavily armored officers, armed with rifles, could be seen surveying vehicles and drivers at the world's busiest border crossing creating a massive bottleneck.
News 8 received a statement from Customs and Border Protection warning travelers who are heading into Mexico.
"CBP is also exercising additional vigilance in southbound inspections in Southern California. As a result, travelers heading southbound into Mexico may experience delays," the statement said.
In the meantime, in Big Bear where Dorner's burnt-out pick up truck was located Thursday morning, a San Diego based U.S. Border Patrol SWAT team is assisting in the ongoing search.
Police are scrambling to find the former LAPD officer and Navy Reservist before he can attack again. He is accused of murdering three people including one police officer, and in an online manifesto has declared war on law enforcement.
[Read the Christopher Dorner manifesto Warning: Some of the content is graphic and is not suitable for all audiences.]
While there have been no confirmed sightings of the 33-year-old fugitive in the Big Bear area, there have been a number of false reports throughout San Diego and the rest of southern California; including an incident in which LAPD officers in Torrance shot at two women delivering newspapers Thursday morning who were in a pickup truck similar to Dorner's.
CBS News has also learned from a law enforcement source that investigators found two long-range rifles and a Glock handgun inside Dorner's burnt-out pick up truck in Big Bear, as well as cold weather survival gear.
That truck has been towed to the San Bernardino crime lab, where it is being analyzed for evidence.
Authorities have also raided the home of Dorner's mother in La Palma, the last place Dorner was known to be staying.
During a four hour search they confiscated several computers, personal items and five bags of evidence.
In a press conference Saturday, the Los Angeles Police Department announced the creation of a joint task force, with the sole mission of finding Dorner.
The task force is made up of a number of law enforcement agencies across Southern California.