SEATTLE (AP) — Authorities in Seattle say 13 people were arrested on various charges during a Saturday evening demonstration in the city. KIRO-TV reported the purpose of the demonstration was not immediately known and no injuries were reported. Police say officers issued multiple dispersal orders to a group obstructing traffic and creating a public safety hazard at the intersection of North Northgate Way and 3rd Avenue Northeast. Authorities say protesters who did not leave were arrested on charges of failing to disperse, pedestrian interference, resisting arrest and obstruction.