Seattle police arrest a 15-year-old suspect after a shooting at a food festival in Seattle leaves three people dead and at least four others injured, according to authorities. Police say the shooting occurs during the event and triggers a response that includes a shootout, after which officers detain one suspect. Authorities also report they are looking for a second shooter in connection with the attack. The investigation focuses on identifying and locating the remaining suspect while forensic and witness information are collected at the scene. The arrested suspect is in custody as police continue their search for the second person they believe participated in the shooting. Details about the victims’ identities, the motive, and the circumstances leading to the shooting are not provided in the available reports. The case remains active, with police urging attention to official updates as the search continues.