Thousand Oaks killer died from self-inflicted gunshot, autopsy confirms

THOUSAND OAKS, Calif. - An autopsy determined that the gunman who killed 12 people at a Southern California bar died from a self-inflicted gunshot, police said Saturday.

Ian David Long, a 28-year-old ex-Marine machine-gunner, fatally shot 11 people at the Borderline Bar and Grill in Thousand Oaks and a police officer who responded just before midnight Wednesday. The officer exchanged gunfire with Long, who was found dead at the scene.

Ventura County Sheriff Bill Ayub said an autopsy determined Long fatally shot himself.

Authorities have yet to determine a motive and are exploring all possibilities. Among them is whether Long believed a former girlfriend might have been at the bar, which was filled with about 150 people on its popular college night that attracts students from several nearby schools.

RELATED: What we know about Thousand Oaks bar shooting suspect Ian Long

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What we know about Thousand Oaks bar shooting suspect Ian Long
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What we know about Thousand Oaks bar shooting suspect Ian Long

Authorities said Ian David Long opened fire Wednesday evening, Nov. 7, 2018, at a country music bar in Southern California, killing multiple people before apparently taking his own life.

(California Department of Motor Vehicles via AP)

Long was a former Marine and neighbors said he may have struggled with post-traumatic stress disorder.

(AP Photo/Richard Vogel)

Ventura County Sheriff Geoff Dean said his department had several previous contacts with the suspect including a call to his home in April, when deputies found him acting irate and irrationally.

(REUTERS/Ringo Chiu)

The 28-year-old was reportedly a homebody who lived with his mother, Colleen. A neighbor also claimed that Long's mother recently confided that her son was growing "violent," according to ABC News.

(AP Photo/Jae C. Hong)

Long was armed with a legally purchased .45-caliber Glock handgun with an extended magazine, according to local law enforcement officials.

(Photo by Irfan Khan / Los Angeles Times via Getty Images)

Witness told local media outlets that Long was wearing all black with a hood and his face partly covered.

(Photo by Irfan Khan / Los Angeles Times via Getty Images)

According to court records, Ian Long was married in 2009 but the couple seperated in 2011 and divorced in 2013.

 (AP Photo/Richard Vogel)

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Sheriff's Capt. Garo Kuredjian said investigators were still interviewing witnesses, have served a search warrant at Long's home and searched the car Long drove to the bar.

"We're going to exhaust every investigative means possible," Kuredjian told the Ventura County Star.

Kuredjian said there is no timeline for completing the investigation. The analysis of items obtained in the searches could take months, he said.

Former Sheriff Geoff Dean, whose last day on the job was Friday, said investigators believe Long targeted the bar but don't know why. At least a half-dozen people interviewed by The Associated Press who described themselves as regulars at the bar don't ever recall seeing Long there.

Authorities described an attack of military efficiency . When Long shot his .45-caliber pistol, he killed. All of the injured suffered cuts, bruises and other minor injuries in frantic attempts to escape the gunfire. Some smashed windows and jumped out.

Based on time stamps, investigators say, Long posted to Instagram during the attack. The post involved his mental state and whether people would believe he was sane.

His social media accounts have been taken down but a law enforcement official said Long posted about his mental state and whether people would believe he was sane. The official, who was briefed on the investigation but not authorized to discuss it publicly, spoke to The Associated Press on condition of anonymity.

Long grew up in Thousand Oaks and several people who knew him described him in disturbing terms. Long made others feel uncomfortable going back to his teens.

Dominique Colell, who coached girls' track and field at the high school where Long was a sprinter, remembers an angry young man who could be verbally and physically combative.

In one instance, Colell said Long used his fingers to mimic shooting her in the back of the head as she talked to another athlete. In another, he grabbed her rear and midsection after she refused to return a cellphone he said was his.

"I literally feared for myself around him," Colell said in an interview Friday. "He was the only athlete that I was scared of."

Police said Long had no criminal record. However, last April, yelling and loud banging noises coming from the home Long shared with his mother prompted a next-door neighbor to call authorities .

Deputies responded and a mental health specialist who assessed Long worried he might be suffering from post-traumatic stress disorder but found no grounds to hospitalize him.

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