By Alexander Smith, Pete Williams, Andrew Blankstein, Alastair Jamieson and Corky Siemaszko
Several hundred people were inside at the time, police said. The gunman later was confirmed dead.
A Marine veteran clad in black and armed with a .45-caliber Glock handgun shot his way into a Southern California bar crowded with college students and unleashed hell before turning the gun on himself, officials said Thursday.
When it was over, 12 others, including a sheriff's sergeant who tried to stop the carnage, were also dead and many more were wounded.
While investigators identified the gunman as 28-year-old Ian David Long and tried to establish a motive, the nation was once again forced to grapple with tragedy and embark on the all-too-familiar rituals of mourning after yet another mass shooting.
When the shooting started late Wednesday at the Borderline Bar & Grill in normally peaceful Thousand Oaks, about 40 miles northwest of Los Angeles, several hundred people were inside for a "college country night," Ventura County Sheriff Geoff Dean said.
"It's a horrific scene in there," Dean said. "There's blood everywhere."
The sheriff said the gunman first shot a security guard standing outside, then "stepped inside, turned to the right, shot several other security and employees and began opening fire inside the nightclub."
He added, "We have no idea what the motive is at this point."
Officials from the FBI and Bureau of Alcohol, Tobacco, Firearms and Explosives are assisting the Ventura County Sheriff's Office in processing evidence at the scene and at the shooter's home.
IN OTHER NEWS
Supreme Court Justice Ruth Bader Ginsburg, 85, breaks ribs in fall
- Supreme Court Justice Ruth Bader Ginsburg, 85, fell in her office at the court and fractured three ribs, the court says.
- "Tests showed that she fractured three ribs on her left side and she was admitted for observation and treatment," the statement from the court said.
- Ginsburg's health has been a matter of intense speculation in recent years. Ginsburg, the court's oldest member, is one of the court's four liberal justices.
Supreme Court Justice Ruth Bader Ginsburg fell in her office and fractured three ribs. The 85-year-old liberal justice was admitted to a hospital Thursday.
Ginsburg's health has been a matter of intense speculation in recent years. The court's oldest member, Ginsburg has survived multiple bouts with cancer, and in 2014 underwent a procedure to have a stent placed in her right coronary artery.
The fall happened Wednesday evening.
"She went home, but after experiencing discomfort overnight, went to George Washington University Hospital early this morning," the court said in a statement Thursday. "Tests showed that she fractured three ribs on her left side and she was admitted for observation and treatment."
It is not the first time that Ginsburg has fractured her ribs while on the court. In June 2012, Ginsburg fractured two ribs in a fall and did not disclose the injury to the public until months later. The court said at the time that despite the fracture, Ginsburg "did not skip a beat."
The Brooklyn-native, one of four liberal justices on the nine-member court, has said she plans to serve on the bench until she is 90, and has hired law clerks through 2020.
Her approach to the law has been described as cautious, though she has been influential in shaping jurisprudence in cases involving gender discrimination, women's reproductive health and international law.
She was the principal author of a landmark brief that led Supreme Court in 1971 to apply the the equal protection clause of the 14th Amendment to women.
Ginsburg, the second of four women to serve on the high court, was appointed by President Bill Clinton in 1993. Before joining the court, she worked as the director of the ACLU's Women's Rights Project.
News of Ginsburg's fall comes on the same morning as the formal investiture of Justice Brett Kavanaugh, President Donald Trump's second nominee to the high court.
The court said that more information would be provided as it became available.