Gunshots rang out at a bar in Thousand Oaks California on Wednesday night and when it was done 13 people, including the shooter and a police sergeant, were dead.

The shooter walked into the Borderline Bar & Grill around 11:20 p.m. dressed in black and wearing sunglasses and a mask, launching smoke bombs and shooting a handgun.

The bar was hosting the popular college night event and many of the victims appear to be college aged kids, The Sun-Sentinel reported.

Deputies arrived and got into a firefight with the suspect, which left one deputy seriously injured, according to Capt. Garo Kuredjian, a Ventura County Sheriff’s department spokesman.

The suspect fired first at a female cashier before creating a distraction with the smoke bombs and then firing his handgun into the crowd.

Sergeant Ron Helus, a Ventura County deputy sheriff, was one of the first on the scene and was shot and killed by the gunman upon entry.

There are an additional 10 – 15 victims and, among them, is a person who survived the Las Vegas mass shooting at the Route 91 Harvest music festival on Oct. 1, 2017.

“I was at the front door talking to my stepdad. I heard these big pops,” a witness told ABC 7. “There were three or four and I hit the ground. The security guard was dead and the man had a handgun. He threw in smoke bombs and he kept firing.”

“People threw chairs out of the windows to try to get away,” the witness said. “The gunman had glasses and a black jacket. He had a big hand gun.”

Another witness said “This maniac came in. Threw in smoke to confuse people and opened fire on the dancefloor. He’s taken many young lives.”

Patrons hid in the attic, in bathroom and some kicked out windows and ran to a nearby gas station for help.

“He shot the front doorman, who was just a young man,” another witness said. “Then he shot the cashier, just a young girl. Then he started moving to the right. He wasn’t looking at us. Then he went into the office, where all the cash and stuff is. He didn’t say anything at all. He just started shooting.”