News 3 dead, 6 injured in mass shooting at Southern California biker bar, authorities say August 24, 2023August 24, 2023 Thao Nguyen, USA TODAY Comments Off on 3 dead, 6 injured in mass shooting at Southern California biker bar, authorities say 3 people are dead and six others are injured after a shooter opened fire Wednesday night at a biker bar in Southern California, authorities said.