Deputies and medical personnel rushed Wednesday night to a mass shooting at a bar in Orange County’s Trabuco Canyon, with sources saying five could have been killed including the shooter. Six more people were transported to a hospital or hospitals.

It happened on Santiago Canyon Road at Cook’s Corner, a biker bar where it was Spaghetti Night.

Orange County Sheriff’s Capt. Aaron Brady confirmed there was a mass shooting there Wednesday evening. Sources later said it likely started as a domestic dispute. The Sheriff’s Department also later said there was a deputy-involved shooting during the response. No deputies were injured.

Sources said preliminary reports are that five were dead in the aftermath of the shooting, including the shooter. It is believed the shooter is a former law enforcement officer from outside of the area.

Social media posts showed a massive response by deputies and Orange County Fire Authority personnel.

A CBS LA reporter in a helicopter around 8:15 p.m. reported seeing what appeared to be at least three sheets covering bodies, one in a parking lot, one on the street and one at the rear of the property. At least two others were being treated by emergency personnel.

“This is real,” she wrote on Facebook at 7:45 p.m.. “… 4 or 6 shots strait (sic) at me.  But he missed me.  Thank you, God!!”

Her photos showed a large smear of blood on the floor of the bar. She shared videos of a chaotic scene outside the bar with deputies and paramedics working on shooting victims in the parking lot.

Gus Gunderman of Tustin was at Cook’s for the $8 spaghetti dinner. He left before the shooting, he said Wednesday night in a public post on Facebook.

“Family members saw family members die tonight,” he wrote. “Glad to be home safe. I left there not too long ago, like minutes before. Apparently it was soon enough.”

California Gov. Gavin Newsom was monitoring the shooting “and coordinating with local officials as more details become available,” his office said.

Cook’s Corner on its website promotes cold beer and good food and says “children welcome.” “Cook’s Corner is considered to be one of the most famous biker bar & restaurant in Southern California,” the site says.

An earlier notable mass shooting in Orange County, also involving domestic violence, happened in October 2011 when Scott Dekraai fatally shot eight people at a hair salon in Seal Beach.

Wednesday’s shooting was the first mass shooting in the county since one at a Laguna Woods

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