The man who shot and killed 12 people in Thousand Oaks, California, was identified on Monday as Ian David Long.
- Sheriff Dean said that Long was the victim in a January 2015 fight at a different bar in Thousand Oaks.
By the time they entered the bar again the gunfire had stopped, and they found 12 people dead inside, including Helus and the gunman.
Earlier this year, Long was cleared by a mental-health specialist after an encounter with police.
"I've been a cop for 41 years and I never thought I've seen the things around the country would happen but I've learned it doesn't matter what community you're in, it doesn't matter how safe your community is, it can happen anywhere", said Sheriff Dean. He said he had an army of friends and families on alert, making calls, and watching the news looking out for his son.
Dean said Long was a Marine veteran, and said there was a chance he suffered from PTSD.
Long joined the Marines in 2008 and rose to the rank of corporal before leaving active service in 2013, Joseph Butterfield, a Marine spokesman, wrote in an email.
"We will be sure to paint a picture of the state of mind of the subject and do our best to identify a motivation", Delacourt said, adding that the FBI would investigate any possible "radicalization" or links to militant groups. Long had received two minor traffic citations in recent years, Dean said. The gun was legally purchased, he added. He lives near the bar and said numerous regulars grew up in the area and have known each other since they were kids. Here's what we know about the victims so far.
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"It appears he walked up to the scene".
"I look up - the security guard is dead". The suspected shooter was found inside the bar with a fatal gunshot wound.
Dozens of lives were saved during Wednesday night'sCalifornia bar shooting thanks to a hero who smashed a window to help people escape.
Seargent Ron Helus of Ventura County Sheriff's Office was the first law enforcement official to arrive at the Borderline Wednesday night. He died at the hospital.
"It's a horrific scene in there, there is blood everywhere and the suspect is part of that, and I didn't want to get that close and disturb the scene and possibly disturb the investigation", said Ventura County Sheriff Geoff Dean.
"There's not a better place for us to be", Bayless said.
Twenty-three people were injured - some from "jumping out of windows, diving under tables", Dean said - and treated at area hospitals.
Alaina Housley, 18 - one of the victims in the Thousand Oaks shooting.
"I just kind of saw it in the corner of my eye and I heard a gunshot and I focused on him and I saw that he was holding a handgun and he continued to shoot at the girl at the front desk", Knapp, 19, told Reuters TV.