Officers responded to shots fired in downtown Renton just before 1 a.m. local time, Renton police spokesperson Sandra Havlik said.
Upon arrival, officers located multiple victims. One person was dead, and emergency personnel treated others at the scene, Havlik said.
Initial reports indicate the shooting stemmed from a dispute outside a large gathering, which led to gunfire by possibly more than one person, police said.
The shooting still was being investigated Saturday morning, Havlik said.
Renton is a city of around 106,000 people regarding a 12-mile drive southeast of downtown Seattle.
