The charred human body found in a burned-down Big Bear cabin after gunbattle and fire were positively identified as the fugitive ex-officer Christopher Dorner, San Bernardino County sheriff officials announced Thursday.

Officials said they used dental records to identify the remains of 33-year-old Dorner, who barricaded himself in a standoff with law enforcement authorities on Tuesday afternoon.

The announcement brought a formal end to the massive manhunt for Dorner, who was accused of killing two people in Irvine, a Riverside police officer and a San Bernardino County sheriff's detective.

On Wednesday, both Sheriff's Office of San Bernardino County, where the cabin located, and Los Angeles Police Department (LAPD) confirmed that charred remains had been found in the cabin but the remains were not identified until Thursday.

On the same day, LAPD spokesman Andy Neiman told a news briefing at LAPD headquarters in downtown Los Angeles that they have lifted the alert and moved back to normal patrol operation.

Neiman noted that investigations were continuing into whether Dorner had any accomplices. He said it was not yet known if anyone would receive any of the one-million-U.S.-dollar reward money that had been offered for information leading to the arrest and conviction of the suspect.

On Tuesday afternoon, one sheriff deputy was killed and another wounded during a gun battle between law enforcement officers and the man who is thought to be Dorner at a Seven Oaks cabin in Big Bear. That came after San Bernardino County Sheriff's deputies received a report of a man matching Dorner's description stealing a car from a cabin in the 1200 block of Club View Drive in Big Bear.

Sheriff's spokeswoman Jodi Miller told media later that day that "the suspect fled into the forest and barricaded himself inside a cabin. A short time later there was an exchange of gunfire between law enforcement and the suspect. Sheriff's SWAT is on scene."

After a standoff lasting about two hours, Sheriff's deputies eventually fired tear gas canisters into the cabin and a fire erupted, burning the structure to the ground. During the standoff, police used a heavily armored vehicle to tear down walls of the cabin.

The manhunt for Dorner had been focused in the Big Bear area since Feb. 7 when his pickup truck was discovered burning on a forest road.

Police said Dorner killed a couple in Irvine and a Riverside police officer and injured two others in a revenge campaign against the police last week. A statement on what is believed to be Dorner's Facebook page criticized racism in LAPD.

Dorner was fired by the Los Angeles Police Department (LAPD) in 2009 after a police disciplinary board found him guilty of making false statement against his training officer, whom he accused of kicking a mentally ill man during an arrest in 2007.

A manifesto on what is believed to be Dorner's Facebook page criticized racism in LAPD.

On Feb. 10, LAPD and the Mayor of Los Angeles jointly announced a one-million-dollar reward for information leading to the capture of Dorner. LAPD also said it will reopen investigation into the firing of Dorner, in a bid to put the public thinking to rest.