A man believed to be Dorner was pinned down Tuesday in a Southern California mountain cabin, where a shootout led to a standoff before police lobbed in tear gas and the cabin caught fire.
The Los Angeles Times reports that officers heard a single gunshot as they moved into the cabin located near Big Bear Lake.
By nightfall, a body was found inside believed to be that of Dorner, CBS reports. Authorities say identity of the remains may take days to identify.
The earlier gunfire at the cabin wounded two sheriff's deputies, one fatally, bringing to four the number of people killed since Dorner allegedly went on a vengeful rampage.
Authorities say Dorner's alleged wave of violence was retribution for having been fired from the LAPD in 2008 after making false statements. Dorner said he would stop the killing when the LAPD publicly proclaimed his innocence and restored his reputation.
Last week, Dorner allegedly fatally shot Monica Quan, 27, and her fiancé, Keith Lawrence in Irvine, Calif., in a vehicle at a parking structure. Quan was the daughter of a former LAPD officer who Dorner claims bungled his termination appeal.
After failing to steal a boat in San Diego, Dorner allegedly attacked more victims – this time, police officers. He allegedly shot at LAPD officers protecting one of his targets, grazing one officer in the head. Dorner was able to escape after shooting up the officers' car.
Thirty minutes later, he allegedly ambushed two officers at an intersection in Riverside, Calif., killing one of them and sending the other to the hospital.
Police then found Dorner's burned-out pickup truck and tracks leading away from the vehicle off a wooded road near Big Bear.