San Bernardino County Sheriff's authorities moved the command post which for the last three days had been at the Bear Mountain Ski resort to the Big Bear sheriff's station.
A scaled-down search effort continued with 50 officers, including SWAT team members combing the wooded area behind the resort where Dorner's burned out truck was discovered Thursday, according to sheriff's officials.
The smaller number of searchers is not an indication authorities believe Dorner is not in the mountain area, according to Cindy Bachman, spokeswoman for the sheriff's department, but that a smaller area is left to be searched.
At the peak of the manhunt, more than 100 officers and authorities were in the snow-covered community searching for the fugitive.
Temperatures dropped to 5 degrees in Big Bear Lake over he weekend.
Officials this afternoon plan to announce a reward for information leading to the arrest and conviction of Dorner.
More information will be released at a 1 p.m. news conference at Los Angeles Police Department headquarters, according to a written statement from the multi-agency task force formed to pursue the ex-officer implicated in three murders.
Police and other officials from Los Angeles, Irvine, Riverside, the FBI and the U.S. Marshals Service are expected.
Anyone with information on Dorner's whereabouts was asked to contact the task force at 213-486-6860. Tips may also be submitted anonymously by calling L.A. Crime Stoppers at 800-222-8477.