PHOTOS: Mass shooting at nightclub in Thousand Oaks, California

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Thursday, November 8, 2018
People stand in a parking lot along South Moorpark Road in the aftermath of a mass shooting at Borderline Bar & Grill, on Thursday, Nov. 8, 2018.
Potential witnesses sit near the scene Thursday, Nov. 8, 2018, in Thousand Oaks, Calif., where a gunman opened fire Wednesday inside a crowded country music bar.
Ventura County Sheriff Geoff Dean speaks to reporters near the scene in Thousand Oaks, Calif., on Thursday, Nov. 8, 2018.
Ventura County Sheriff Geoff Dean speaks to reporters near the scene in Thousand Oaks, Calif., on Thursday, Nov. 8, 2018.
A witness talks to reporters outside a country music bar and dance hall in Thousand Oaks after a gunman barged into a large, crowded venue and opened fire late November 07, 2018.
A forensics team gets ready work the scene Thursday, Nov. 8, 2018, in Thousand Oaks, Calif.
An FBI agent works the scene Thursday, Nov. 8, 2018, in Thousand Oaks, Calif.
A forensics team works the scene Thursday, Nov. 8, 2018, in Thousand Oaks, Calif.
A forensics team works the scene Thursday, Nov. 8, 2018, in Thousand Oaks, Calif.
A forensics team works the scene Thursday, Nov. 8, 2018, in Thousand Oaks, Calif.
People comfort each other as they stand near the scene Thursday, Nov. 8, 2018, in Thousand Oaks, Calif.
People comfort each other after gunman opens fire on a nightclub in California.
An FBI agent talks to a potential witness at a shooting at a California nightclub.
Two young ladies comfort each other after a shooting at a California nightclub.
People walk away from the scene after a gunman opens fire on a nightclub in California.
People comfort each other after gunman opens fire on a nightclub in California, killing at least 11.
Sheriff's deputy speaks to a potential witness outside of a California nightclub where a gunman opened fire, killing at least 11.
People comfort each other outside California nightclub after gunman opens fire, killing at least 11.
Sheriff's deputies speak to a potential witness after gunman opens fire inside a country dance bar, wounding 11 people including a deputy who rushed to the scene.
Two men embrace after a mass shooting at California nightclub.
Two men embrace after a mass shooting at California nightclub.
Authorities rush to the scene after a gunman opens fire on a nightclub in California.
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PHOTOS: Mass shooting at nightclub in Thousand Oaks, CaliforniaPeople stand in a parking lot along South Moorpark Road in the aftermath of a mass shooting at Borderline Bar & Grill, on Thursday, Nov. 8, 2018.
Kent Nishimura / Los Angeles Times

At least a dozen people were killed after a gunman opened fire at a nightclub in Thousand Oaks, California.

Hundreds of people were inside the Borderline Bar & Grill when the gunfire rang out, authorities said. The suspect was found dead inside the nightclub.

The suspect was identified as Ian David Long. Among those who were killed is a Ventura County sheriff's sergeant, Ron Helus.

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