Possibly several hundred people were in the Borderline Bar and Grill at an event for college students when the shooting erupted, said Gary Kuredjian of the Ventura County Sheriff's office. He died at a hospital after being shot numerous times.
"He died a hero", Dean said. "I gotta go on a call, '" Sheriff Geoff Dean said.
No fatalities have been reported and the Ventura County Star said that at least four ambulances were at the scene to treat the victims.
Police cars are seen outside a country music bar and dance hall in Thousand Oaks, west of Los Angeles, after a gunman barged into a large, crowded venue and opened fire late November 7, 2018, killing at least 11 people, U.S. police said. The bar was hosting its weekly "College Country Night" when the incident was reported around 11.20 pm.More news: 15 migrant children found in refrigerated lorry at UK port
Champion said that witnessing the mass shooting helped him decide to become a firefighter. When they realized what was occurring, some patrons used barstools to break a window and escape, according to the Associated Press. He first shot and killed someone working security then entered the building and shot several more people just inside before continuing his killing spree. Long was found dead at the scene, having apparently shot himself. "As soon as we heard a break in the shooting we knew he was reloading and we threw a couple of bar stools through the closest to us so we could get out". But most agree that there was a shooting and many people fled the bar and grill.
Shocked bystanders are treated at the scene in Thousand Oaks, California.
Helus was not only a 29-year sheriff veteran, but he was also a husband and father. The injured included a deputy, Kuredjian said.
"The fact that he was the first in the door doesn't surprise me at all", sheriff's Sgt. Eric Buschow said Thursday.
The suspect, who has not been identified, was found dead inside the bar, Dean said.More news: Paul Pogba says beating Juventus was unusual
"(He) said to her, 'Hey I got to go handle a call.
The shooting began at 23:20 local time on Wednesday about 40 miles (65km) north-west of Los Angeles, police say.
She said she had planned to go with them but stayed behind to do some schoolwork instead. A reporter spoke to a man who had not heard from his son.
Law enforcement agencies, firefighters and other first responders, along with several ambulances, additional units from the California Highway Patrol, Simi Valley and the Federal Bureau of Investigation, reached the spot soon after the shooting was reported.More news: Big retailers gear up for Black Friday