SAN DIEGO - Surveillance video released Saturday shows a man believed to be triple-murder suspect Christopher Dorner throwing items into a trash bin behind a National City business on Monday.
KEY EVENTS: Search for Christopher Dorner
The video, which was obtained exclusively by CNN, was recorded at about 9 a.m. Monday in an alley behind Platinum Auto Sports on National City Boulevard. The video appears to show Dorner pull up in a gray Nissan pickup, get out and begin throwing items into the trash bin.
Later that morning, an employee went to throw away some trash and made an astonishing discovery.
"He came back with a magazine full of bullets, a military belt and a helmet actually," said shop owner Majid Yahyai.
Although Yahyai had no idea who the ammunition and other equipment belonged to at the time, he knew he had to turn the items over to the police.
"I walked it in across the street to the police station and turned them in," he said.
The National City Police Department is located across the street from Yahyai's business, but that did not seem to matter to Dorner.
Yahyai said that since he now knows who is in the video, he feels a strong sense of relief.
"I was really happy that my employee missed him by 20, 30 minutes because then he would've gone face-to-face with him and God knows what would've happened," he said.
Dorner, a fired Los Angeles Police Department officer, is suspected in the revenge slayings of a college basketball coach and her fiancé in Irvine and the ambush killing of a Riverside police officer.
The search for Dorner began Sunday night when Monica Quan, a Cal State Fullerton basketball coach and the daughter of a former Los Angeles Police Department captain, was shot to death along with her fiancé Keith Lawrence in an Irvine parking garage.
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 a lengthy manifesto, which blames Quan's father for losing his job.
READ MORE: Full copy of Dorner's manifesto
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.
On Monday, some of Dorner's belongings, including police equipment, were found in a trash bin in National City. On Tuesday, Dorner checked into the Gateway Inn at Navy Base Point Loma.
Then on Wednesday, police said Dorner tried to steal a yacht from the Southwestern Yacht Club. Police say Dorner tied up an 81-year-old man and tried to take off in the boat but he was unable to operate it.
About an hour later around midnight on Wednesday, an LAPD badge was found at a gas station near Lindbergh Field.
Police surrounded Naval Base Point Loma and the Gateway Inn on Thursday after receiving a report of a suspect matching Dorner, but nobody was found.
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 when Dorner allegedly opened fire on them, grazing one officer in the head. The officers returned fire, but Dorner, wearing camouflage fatigues and using a shoulder-held weapon, escaped, police said.
A short time later, Dorner allegedly opened fire on two Riverside police officers who were stopped at a red light at Magnolia and Arlington avenues in Riverside, according to Riverside police Lt. Guy Toussaint, who said the two were on "routine patrol" and were not searching for Dorner at the time.
One officer -- a 34-year-old, 11-year veteran of the force -- was killed. The wounded Riverside officer, who is 27 years old, underwent surgery and is expected to fully recover, Riverside police Chief Sergio Diaz said.
Later Thursday afternoon, authorities found Dorner's burned pickup truck near Big Bear.
On Friday, authorities across Southern California remained on high alert for the second consecutive day as they continued the search for Dorner.
San Bernardino County Sheriff John McMahon told reporters Friday morning that the hunt will continue in Big Bear until Dorner is found. He also said there was no evidence that he left the mountain.
Relentless snowfall Friday grounded helicopters with heat-sensing technology and hampered efforts to find the fugitive.
On Saturday, clear skies allowed authorities to use the aircraft to aid scores of officers searching in the snow-covered San Bernardino Mountains for Dorner.