Thousand Oaks: 'Mass shooting' reported at California bar

Thousand Oaks: 'Mass shooting' reported at California bar

Multiple people are believed to have been injured in a shooting at a bar packed with college students in southern California, local authorities say.

Ventura County Fire Department said on its website that firefighters and first responders were at the scene of a reported shooting in Ventura County in California.

Multiple people were reportedly injured after at least one gunman opened fire at a bar in Thousand Oaks, California, late Wednesday.

A Ventura County Sheriff's Office official said approximately 30 shots had been fired inside the building.

Police responded to the incident at around 11.30pm local time (7.30am GMT). "These poeple have never hurt anyone in their lives, they are just kids", he said. Kuredjian said he could not confirm whether any of those shot were dead or the severity of their injuries.

One witness saw the suspect tossing smoke bombs in front of the restaurant before watching a security guard get shot.

The gunman shouted something, but Ryan could not hear what he said. There was a massive law enforcement presence. Information on the extent of the victims' injuries has not yet been released.

People say he threw "smoke grenades all over the place".

Authorities are still treating it as an active shooter scene.