dk_photos via Getty Images
Mohammad Ismail / Reuters
The motive for the attack was not immediately clear.
Washington State Patrol
Dozens were also wounded in the attack.
Today / Channel 9 / Facebook
Four women were killed in the attack, and a man who was taken to a local hospital with serious injuries died overnight.
UPDATE 8.30am: A 47-year-old man has been arrested and taken to hospital. The siege ended at 7.20am, more than seven hours after the man barricaded himself inside the unit. Channel 7 are reporting the...