Shon Barnes steps down amid questions over authorities’ handling of the shooting at a popular food festival.

Seattle Police Chief Shon Barnes has resigned less than a week after a deadly shooting at one of the US city’s largest summer festivals as questions have mounted over the authorities’ handling of its aftermath.

Mayor Katie Wilson announced Barnes’s resignation on Thursday and named Deputy Chief Andre Sayles, a police officer with more than two decades of law enforcement experience, as interim chief.

The move came after three people were killed and four injured, including a two-year-old boy, in a shootout on Sunday at the annual Bite of Seattle food festival.

Dozens of police officers were already providing security at the event, and court documents said at least one officer saw a 15-year-old suspect firing into the crowd and quickly persuaded him to surrender. Police are still searching for at least one other suspect.

The shooting unfolded while Barnes was attending a law enforcement conference outside the city in the northwestern state of Washington.

While Wilson praised officers’ response at the scene, saying it likely saved lives, she said the city’s communication with the public in the hours that followed fell short.

Police posted about the shooting on social media shortly after it began but then went nearly five hours without providing another public update, leaving residents uncertain about whether there was an ongoing threat. The city also failed to send alerts through its emergency notification system while Wilson herself mistakenly announced that two suspects had been taken into custody before later retracting the statement.

“What I did not fully understand in that moment was how little information had reached the public or the press since the incident began,” Wilson said in a video statement on Thursday. “Had I known that, I would have pushed for an immediate briefing rather than waiting for a press conference to be organised.”

Barnes, in a statement released by the mayor’s office, described serving as Seattle’s police chief as “an honor” and said he hoped the transition would allow the department to refocus on “addressing youth gun violence and preventing more tragedies”.

The resignation followed hours of speculation over Barnes’s future with supporters saying he had resisted calls from Wilson to step down. Earlier in the day, Barnes told The Seattle Times that whether he remained chief was “up to the mayor”.

Several Black community organisations, including the Seattle NAACP and the Urban League of Metropolitan Seattle, urged Wilson not to make Barnes, the city’s second Black police chief, “a scapegoat for the complex challenges of public safety”.

They credited him with improving relations between police and the community, reducing gun violence and strengthening the department’s operations. Several City Council members also backed Barnes, pointing out that Seattle has now had four police chiefs in less than three years.

Barnes was appointed in late 2024 by former Mayor Bruce Harrell after leading the Madison Police Department in the northern state of Wisconsin. When Wilson, a democratic socialist who had previously supported defunding the police, took office this year, she kept Barnes in the role, signalling she did not plan to dramatically change the city’s public safety strategy.

Barnes’s resignation was announced as Seattle prepares for another major weekend event with the annual Seafair festival set to begin on Friday.