Richard Heltebrake had previously been unsuccessful in claiming the reward offered for information leading to the arrest and conviction of Dorner, who was a suspect in four murders.
Heltebrake, a camp ranger, has said he believes he should get the reward because he called 911 after Dorner forced him out of his white pickup in the Big Bear area on Feb. 12.
A 12-page report by the Los Angeles Police Department says Heltebrake is not entitled to the reward because he did not provide any useful information.
The report said law enforcement had already spotted Dorner driving a white pickup.
Authorities announced Tuesday the reward money would be distributed among four people. Jim and Karen Reynolds, whose SUV was stolen by Dorner after he tied them up inside their Big Bear condo, will receive 80 percent of the funds.
Authorities said if the couple had not been able to free themselves and call police, Dorner probably would have gotten away.
Ski resort employee Daniel M. McGowan, who spotted Dorner's burning truck, will get 15 percent. Tow truck driver R. Lee McDaniel, who told police he had spotted Dorner, will get 5 percent.
In asking for the funds release to be blocked, Heltebrake's attorney says his client should receive at least $1 million and "special damages," the Los Angeles Times reported Thursday.