Multiple people have been injured in a shooting at a bar in southern California, authorities said.

Police told the Los Angeles Times that at least 30 shots were fired at the Borderline Bar & Grill in Thousand Oaks, about 40 miles west of Los Angeles.

The extent of the victims’ injuries has not yet been released.

Witnesses said a man fired several shots from a handgun before throwing smoke bombs into the crowded bar.

Authorities said there were multiple injuries including one police officer. Police and emergency crews flooded the scene.

Authorities urged the public to avoid the area.