LOS ANGELES - The man who authorities say engaged officers in a violent gun battle during a traffic stop off the 215 Freeway in Riverside, killing one California Highway Patrol officer and wounding two others, was identified Tuesday as 49-year-old Aaron Luther.

Luther, who died in Monday's shootout, has a lengthy criminal record dating to the late 1980s in Los Angeles and San Bernardino counties, according to public records and law enforcement sources.

His convictions include disturbing the peace, vandalism, battery, stalking, unlawful possession of a firearm, assault with a deadly weapon and corporal injury on a spouse. He was convicted of burglary charges and attempted second-degree murder with a sentencing enhancement for use of a firearm in Los Angeles County in 1994. He was sentenced to 12 years in state prison, according to the California Department of Rehabilitation and Corrections, and was paroled in 2004.

Authorities have not determined a motive in the shooting.

Luther's father, Dennis Luther, told KTLA-TV that his son was a "desperate man" and had recently been depressed.

"I think he just thought he didn't have much to live for," Dennis Luther said. "This might just have been suicide by the police. It's just unfortunate that he happened to hurt anybody but himself."

What began as a routine traffic stop Monday evening quickly turned deadly, prompting a massive response from law enforcement agencies across the region.

The situation began at 5:35 p.m. when CHP Officer Andre Moye stopped Luther, who was driving a white GMC pickup, for an unknown offense at the Eastridge Avenue/Eucalyptus Avenue off-ramp. At some point during the traffic stop, Moye decided to impound the man's vehicle and called for a tow truck, CHP Inland Division Assistant Chief Scott Parker said.

It was not immediately clear where Luther was heading when he was stopped. While Moye was filling out paperwork, the man got a rifle from his truck and started shooting at the officer, Parker said.

"We don't know why" the shooting began, Riverside police spokesman Ryan Railsback said. "That is all going to be part of this lengthy investigation."

Moye returned fire, and even though he had been shot, he was able to radio for help. Three other CHP officers soon arrived, followed by three deputies from the Riverside County Sheriff's Department and at least one officer from the Riverside Police Department, authorities said.

Moye, 34, was airlifted to Riverside University Health System Medical Center and died on the way to the hospital. Another CHP officer was critically injured, and a third was wounded during the gunfire. Authorities said two civilians are thought to have suffered minor injuries.

Gabriela Mendoza, 21, was chatting with her fiance while driving to class at Platt College when she got stuck in traffic near the 215 Freeway overpass. When she looked to her right, she saw a man holding a rifle advancing toward a CHP cruiser. She hung up the phone and started recording.

The 11-minute video shows CHP officers huddled behind a cruiser engaged in a gun battle.

"The way he was holding the gun and dodging bullets, it looked like he had some kind of training," Mendoza said of the gunman. "He looked like he knew what he was doing."

Eventually, the armed man disappears from view and a helicopter arrives to airlift Moye to the hospital, the video shows.

Dozens of rounds were fired over the course of the gunfight, according to law enforcement officials. The type of rifle the shooter used has not been identified. It is not clear whose gunfire killed Luther, officials said.

The freeway off-ramp remained closed Tuesday while authorities continued to scour the area for evidence.

"It was a long and horrific gun battle, and resulted in a very extensive crime scene," Riverside Police Chief Sergio Diaz said at the news conference Monday night.

Local investigators initially thought Luther had ties to the Vagos motorcycle gang, one of the nation's largest and most dangerous outlaw biker gangs, alongside Hell's Angels and the Mongols.

However, federal experts familiar with the Vagos say he is not a member.

The gang was founded in California in the 1960s and now claims 1,000 members in several chapters throughout the U.S., federal agents say.

Moye's death prompted an outpouring of support from law enforcement agencies across California.

Dozens of officers stood in salute outside the hospital late Monday as Moye's body was loaded into a hearse and taken to the coroner's office. Some embraced as they stood outside the medical center.

Moye was a CHP officer for almost three years and was assigned to the Riverside office after graduating from the CHP Academy on March 3, 2017. He previously worked as an electrician, but had dreamed of being an officer since he was a child. He is survived by his wife, Sara, his parents and his siblings.

Videos posted to Moye's YouTube account show him and his wife zip-lining and snorkeling during a vacation in 2014 in Mexico and riding wave runners through the canyons at Lake Powell a year later.

Moye is the third officer to be shot and killed in Southern California in the past two months.

In June, Los Angeles County Sheriff's Deputy Joseph Gilbert Solano was gunned down inside a Jack in the Box in Alhambra. He died two days later. Then last month, off-duty LAPD Officer Juan Jose Diaz was shot after confronting someone tagging a wall outside a taco stand while grabbing a bite to eat with his girlfriend and her two brothers.

"I am devastated by the tragedy that unfolded earlier in Riverside," CHP Commissioner Warren Stanley said in a tweet Monday. "Tonight, I mourn the loss of one of our own, CHP Officer Andre Moye, who was killed during a shootout following a traffic stop. Prayers go out to all, including the responding officers injured in the shooting."

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