PHOTOS: Mass shooting at nightclub in Thousand Oaks, California

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.

What we know about the Thousand Oaks shooting suspect
Remembering Sgt. Ron Helus
Copyright © 2022 KFSN-TV. All Rights Reserved.