Investigators said Tuesday 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.

High school coach says bar shooting suspect assaulted her 01:14. NEWBURY PARK, Calif. -- A former track coach at Newbury Park High School in California says Ian David Long, the 28-year-old suspect ...

Ian David Long attacked the Borderline Bar & Grill in Thousand Oaks, California, on Nov. 7, 2018, shooting 12 people dead. News Correspondent The Marine Corps veteran who shot up a California bar ...

CAMARILLO, Calif. – Gunman Ian David Long was posting messages on his Instagram account during the mass shooting Wednesday night in Thousand Oaks, a law enforcement official said. Sgt. Eric ...

Dominique Colell said Ian David Long lunged at her in the spring of 2008 when he was a senior at Newbury Park High School. Colell, then 28, was the girls track coach and also disciplined the boys ...

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… ...

Undated photo of Ian David Long, the suspect the mass shooting at a bar in Thousand Oaks, California, during his time in the U.S. Marine Corps is seen on the Facebook page of his mother, Colleen Long.

An autopsy determined that the shooter who opened fire and killed 12 people at the Borderline Bar & Grill in Thousand Oaks died from a self-inflicted gunshot.