Auburn, Wash., police said they were interviewing one "person of interest" Sunday, though no charges have been filed.
Witnesses told KOMO-TV, Seattle, a fight broke out between a large group of people leaving the Sports Page, a sports bar in Auburn, when shots rang out.
Officers responding to the scene said it was difficult in the chaos to determine how many people had been involved and conceded more victims could have fled, Auburn police Cmdr. Mike Hirman said.
All the victims were in their 20s, police said.