Three people have been shot dead at a crowded food festival in Seattle in the United States. Four others were wounded, including a toddler, in what city police believe was a shootout involving two suspects. One of them surrendered to police after the shooting on Sunday - the other fled. Assistant Seattle Police Chief Tyrone Davis told a news conference on Sunday night that there was no ongoing threat to the public. Police said the suspect in custody was a young person but declined to provide more details.