LOS ANGELES (AP) — A sheriff's sergeant accidentally shot by a fellow police officer as they responded to a mass shooting at a California bar had tripped and fallen during the chaos and was struck...

THOUSAND OAKS, Calif. (AP) — The 12 people killed in a mass shooting and gunbattle at a Southern California country-western bar a year ago have been remembered in a public park memorial called The...

A longtime city worker opened fire Friday in a building that houses Virginia Beach government offices, killing 12 people and wounding six others.

THOUSAND OAKS, Calif. (AP) — As terrified people scrambled out of broken windows, screaming and bleeding and fleeing a mass shooting inside a California bar, Sgt. Ron Helus and a highway patrolman decided to try to stop the gunman, running in together with assault-style rifles to what turned out to be an ambush.

Almost immediately inside the dark and smoky bar, the gunman fired on the officers, hitting Helus five times. They retreated and returned fire.

THOUSAND OAKS, Calif. (AP) — The gunman who killed 12 people in a crowded Southern California bar had more than 150 bullets left to fire but stopped shooting to ambush arriving officers, killing one of them, police said Tuesday.

Investigators said they still don't know why 28-year-old Ian David Long attacked staff and customers at the Borderline Bar and Grill in the Los Angeles suburb of Thousand Oaks on Nov. 7.

THOUSAND OAKS, Calif. (AP) — The Latest on the investigation into a mass shooting at a Southern California bar (all times local):

10:30 a.m.

Law enforcement authorities say they are still trying to learn why a gunman killed 12 people in a Southern California bar before taking his own life.

THOUSAND OAKS, Calif. (AP) — At first, the outlines of the mass shooter's 28 years appeared unremarkable.

Ian David Long enlisted in the Marines out of high school and married at 19. Within five years, he was honorably discharged, divorced and in college.

As the picture sharpened, troubling details emerged — the kinds of clues that, in hindsight, make people wonder out loud whether the impulse that led Long to kill 12 people at a country music bar had been forming in plain sight.

THOUSAND OAKS, Calif. (AP) — An autopsy determined that the gunman who killed 12 people at a Southern California bar died from a self-inflicted gunshot, police said Saturday.

THOUSAND OAKS, Calif. (AP) — One was a veteran police officer who didn't hesitate to run toward danger. Another had survived the deadliest mass shooting in modern U.S. history. Others include two friends who loved off-roading, a Marine veteran who dedicated his life to service and a recent college graduate who worked with children with special needs.

THOUSAND OAKS, Calif. (AP) — Authorities trying to make sense of why a gunman killed 12 people at a Southern California bar are not publicly discussing what they've learned, but at least one Instagram post he made after beginning the massacre has emerged as an early focus.

THOUSAND OAKS, Calif. (AP) — The gunman who killed 12 people at a country music bar in Southern California went on social media during the attack and posted about his mental state and whether people would believe he was sane, a law enforcement official said Friday.

Also, one of the possibilities investigators are looking into is whether gunman Ian David Long believed his former girlfriend would be at the bar, the official said.

THOUSAND OAKS, Calif. (AP) — The Latest on the shooting at a Southern California bar that left 13 dead, including the gunman (all times local):

3:45 p.m.

A high school track coach says she was afraid of a student who later killed 12 people in a bar in Southern California.

Dominique Colell says she had run-ins with then-sprinter Ian David Long that convinced her that he was "mentally disturbed" and had "anger issues" before he left to join the U.S. Marine Corps.

THOUSAND OAKS, Calif. (AP) — Neighbors of Ian David Long described the man who shot and killed 12 people at a country music bar as distant in public but combative with his mother inside the suburban Los Angeles home the two shared.

THOUSAND OAKS, Calif. (AP) — Ian David Long began his adult life by enlisting in the Marines and getting married. Years after a divorce and a discharge and months after shouting brought a mental health expert to his door, Long killed 12 people at a country music bar outside Los Angeles.

Long, 28, was a former military machine gunner who apparently killed himself after the Wednesday night attack in Thousand Oaks, the quiet suburb where he lived with his mother.

THOUSAND OAKS, Calif. (AP) — Terrified patrons hurled barstools through windows to escape or threw their bodies protectively on top of friends as a Marine combat veteran killed 12 people at a country music bar in an attack that added Thousand Oaks to the tragic roster of American cities traumatized by mass shootings.

Dressed all in black with his hood pulled up, the gunman apparently took his own life as scores of police converged on the Borderline Bar and Grill in Southern California.

THOUSAND OAKS, Calif. (AP) — Andrew Whitworth and most of his Los Angeles Rams teammates live within a few miles of their team's training complex in Thousand Oaks. The Borderline Bar and Grill is only five miles south of their weekday headquarters in this placid suburban city.

The Rams all reacted with horror and sadness Thursday after a late-night mass shooting occurred about five miles north of their fields and training rooms.

The shooting at a bar in southern California marks the second deadliest mass shooting in the U.S. in 2018.

A list of the deadliest mass shootings in the last year:

— Nov. 7, 2018: Ian David Long killed 12 people at a country music bar in Thousand Oaks, California, before taking his own life. Long was a Marine combat veteran of the war in Afghanistan.