Palm Beach Post3 killed, 1 injured when gunman opens fire at party near SeattlePalm Beach PostMUKILTEO, Wash. — Three people were killed and one person suffered injuries after shots rang out at a party in a Seattle suburb early Saturday, Mukilteo city officials said. >> Read more trending stories. Authorities had a male suspect in custody ...3 dead, 1 wounded as gunman opens fire during party in MukilteoKOMO NewsGunman Shoots Dead 3 Young Partygoers at Mukilteo, Wash.