At a morning press conference, Ventura County Sheriff Bill Ayub said Sgt. Ron Helus was struck five times by bullets from the suspect and a sixth time by a round from the CHP officer's rifle.
RELATED: Thousand Oaks shooting: 13 killed at Borderline Bar & Grill, including gunman, Ian David Long
A mass shooting at a Thousand Oaks, California, nightclub left 13 people dead, including a Ventura County sheriff's sergeant and the gunman, authorities said.
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Both law enforcement officers had entered the venue to confront 28-year-old Ian David Long, who shot 13 victims before he fatally turned his weapon on himself. Helus and 11 other victims died in the incident.
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Investigators have yet to announce Long's motive for the shooting. Long was carrying seven high-capacity, 30-round magazines when he stormed into the Borderline Bar on the evening of Nov. 7, the Sheriff's Office said.
The shooter was armed with a folding knife and a Glock .45 caliber semi-automatic pistol he legally bought in 2016 at a Southern California gun shop, according to Ayub.
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He threw several smoke grenades and fired over 50 rounds during the rampage, hitting 13 people, including the sheriff's sergeant.
Helus, a 29-year veteran of the Sheriff's Office, was wearing body armor when he was shot, authorities said.
PHOTOS: Mass shooting at nightclub in Thousand Oaks, California