Update

A law enforcement official tells The Associated Press a charred body has been found in the burned cabin where a fugitive ex-cop is believed to have been in a standoff with sheriff's deputies.

The official speaking on condition of anonymity because the investigation is ongoing says the body was found at about 6:30 p.m. Tuesday.

Later, a police official in Los Angles said a body had not been found.

Authorities said earlier they believed the man in the cabin was Christopher Dorner.

He has been on the run since they say he launched a campaign to exact revenge against the Los Angeles Police Department for his firing.

Officials will be looking for identifying marks such as tattoos before confirming the identity.

Police say Dorner killed four people, including a deputy on Tuesday.

 BIG BEAR LAKE, Calif. (AP) _ Authorities say the former Los Angeles police

officer wanted for killing three people is holed up in a cabin miles from where

his truck was found.

 A sheriff's official says Christopher Dorner stole a vehicle Tuesday near Big

Bear Lake, abandoned it after a chase, ran into the forest and barricaded

himself in the cabin. He got into a gunfight with officers, two of whom were

injured.

 As the crow flies, it's about five miles from where Dorner's pickup was found

Thursday, though a ridge with peaks topping 8,000 feet lies between the

locations. By road, the areas are about 30 miles apart.

 The manhunt for Dorner began Wednesday. In an online post, he targeted dozens

of people he feels are responsible for his firing from the LAPD in 2008.