Sheriff identifies Southern California bar shooting suspect as 28-year-old Ian David Long. (Photos: VCG)

Using a smoke bomb and a handgun, a hooded gunman dressed all in black opened fire during “college night” at a country music bar in Southern California, killing 12 people and sending hundreds fleeing in terror, authorities said Thursday. The gunman was later found dead.

Authorities said the motive for the attack Wednesday night was under investigation.

Patrons screamed in fear, shouted “Get down!” and used barstools to smash second-floor windows and jump to safety as gunfire erupted at the Borderline Bar & Grill, a hangout popular with students from nearby California Lutheran University. The dead included 11 people inside the bar and a sheriff’s sergeant who was the first officer inside the door, Ventura County Sheriff Geoff Dean said.

“It’s a horrific scene in there,” Dean said in the parking lot. “There’s blood everywhere.” (with input from AP)

The Southern California bar where a gunman killed 13 people says on its website that it’s been in operation for more than 25 years.