This article is more than 1 year old

This article is more than 1 year old

An autopsy has found the gunman who killed 12 people at a Southern California bar died from a self-inflicted gunshot.

Police say Ian Long, a 28-year-old ex-marine machine-gunner, shot and killed 11 people at the Borderline Bar and Grill in the town of Thousand Oaks, along with a police officer who responded just before midnight on Wednesday. More than two dozen were wounded.

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Police said the officer exchanged gunfire with Long, who was found dead at the scene.

The Ventura county sheriff, Bill Ayub, said on Saturday that an autopsy showed Long fatally shot himself.

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

Investigators have not commented on a motive for the attack or whether mental illness played a role.



But neighbors reported hearing frequent loud fights between Long and his mother, one of them in April so extreme they called police, and authorities at the time worried that Long, an Afghanistan war veteran, might have had post-traumatic stress disorder. They did not seek to have him treated at a mental health institution, however.