Ventura County Sheriff Geoff Dean said at a press conference Thursday morning that authorities believe Long fatally shot himself after the massacre.
Long was a veteran who served in the US military from 2008 to 2013, including a stint in Afghanistan from 2010 to 2011, the Marine Corps confirmed in a statement.
Dean said his deputies had encountered Long prior to Wednesday night, and even visited his home last April and found him acting “irate” and “irrationally.”
Though deputies summoned mental-health specialists to the scene, they declined to take him to a psychiatric facility for involuntary commitment, saying he didn’t meet the criteria, Dean said.
Here’s what else we know so far, from witnesses and police authorities, about Long:
- He used a Glock 21 .45-caliber handgun.
- Authorities said the handgun was purchased legally, but the extended magazine it was outfitted with was illegal.
- A witness told KABC-TV the gunman reloaded the gun at least once.
- Witnesses said he used a smoke grenade, but police haven’t confirmed that yet.
- Witnesses said the gunman wore all black, including a black hat, glasses and a black shirt. Dean confirmed Long was wearing a black sweater.
- Law enforcement sources told the Los Angeles Times that the gunman drove his mother’s car to the attack.
- Authorities said they’re still obtaining warrants to search Long’s residence and the car he drove to the bar.
This story is developing. Refresh for updates.