Several injured in shooting at a bar in southern California in U.S., police said.
Ventura County Sheriff's Office Captain Garo Kuredjian said it is "still an active scene".
Initial reports indicated that a man had opened fire with a semi-automatic gun at about 11.20pm.
"He shot a lot, at least 30 times". I look up - the security guard is dead.
Witnesses tell ABC News that a man fired several shots from a handgun before tossing smoke bombs and starting to fire again.
The attack has been upgraded to a level 2 mass casualty incident indicating that there are between 10 to 20 injured victims.
There were reports of more gunfire as officers responded.
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The gunman was still believed to be inside the bar an hour later, according to a police official.
He told reporters: "When our deputies arrive on the scene they attempted to neutralise that threat, I can't tell you if it was neutralised or not".
They said that soon after the gunman opened fire, victims were running to a nearby petrol station to get help.
It has not yet been revealed the extent of the injuries.
"The gunman was throwing smoke grenades all over the place", a different witness told KABC.
The venue's website says for a quarter of a century it "has stood as the Ventura County's largest country dance hall and live music venue".