Mayor Katie Wilson described the incident as “an act of horrific violence” affecting a community gathering.
Wilson emphasized the city's commitment to investigating the event while focusing on supporting the victims and their families.
“In the days ahead, we will establish what happened and be transparent with the public about what we have learned,” she said.
She added that public attention should remain centered on those affected by the violence.
“Tonight, our attention belongs to the people whose lives were taken, those fighting to recover, and the families beside them,” Wilson said.
Eyewitnesses reported hearing rapid gunfire near outdoor vendor displays and stage areas, prompting crowds to flee into nearby structures, including the Space Needle gift shop.
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According to the Gun Violence Archive, the incident marks one of at least 271 mass shootings recorded in the United States this year.
