Christopher Dorner's charred body believed found in cabin in Big Bear Lake, Calif.

The man who was at war with the Los Angeles Police Department allegedly killed four people. Forensic testing will determine if the body is that of the most-wanted man.

The manhunt for a former Los Angeles police officer suspected of going on a killing spree converged Tuesday on a mountain cabin where authorities believe he barricaded himself inside, engaged in a shootout that killed a deputy and then never emerged as the home went up in flames.

A single gunshot was heard from within. San Bernardino County sheriff’s spokeswoman Jodi Miller said Tuesday night that a charred body was found inside the burned-out cabin.

Investigators will use forensic tests to determine if the body belongs to Christopher Dorner. If the results are positive, the search for the most wanted man in America over the last week will have ended the way he had expected — death, with the police pursuing him. He is believed to have killed at least four people.

Thousands of officers had been on the hunt for the former Navy reservist since police said he launched a campaign to exact revenge against the Los Angeles Police Department for his firing. They say he threatened to bring “warfare” to officers and their families, spreading fear and setting off a search for him across the Southwest and Mexico.

“Enough is enough. It’s time for you to turn yourself in. It’s time to stop the bloodshed,” LAPD Cmdr. Andrew Smith said at a news conference outside police headquarters in Los Angeles, a starkly different atmosphere than last week when Dorner was on the loose and officials briefed the news media under heavy security in an underground hallway.

A short time after Smith spoke Tuesday, smoke began to rise from the cabin in the snow-covered woods near Big Bear Lake, a resort town about 80 miles east of Los Angeles. Flames then engulfed the building — images that were broadcast on live television around the world. TV helicopters showed the fire burning freely with no apparent effort to extinguish it.

“We have reason to believe that it is him,” said San Bernardino County sheriff’s spokeswoman Cynthia Bachman, adding that she didn’t know how the fire started. She said there was gunfire between the person in the cabin and officers around the home before the blaze began.