BIG BEAR LAKE, Calif. -
A charred body was also found inside after a shootout and fire.
Authorities believe the remains are those of the former Los Angeles police officer, but they have not been formally identified.
The official spoke on condition of anonymity because of the ongoing investigation and says the charred body and personal items were found in the basement of the burned cabin. The area is in the mountains east of Los Angeles.
Two sheriff's deputies were also shot, one fatally. Dorner is also suspected of earlier killing a young couple and a police officer, and wounding two other officers.