The PI has some news about the fire on 125th which does appear to an arson and is being linked to the fire behind Safeway yesterday.
Arson investigators arrived on scene soon after the flames were put out and Seattle Police Department scanner traffic suggested officers were combing the area looking for a suspect described as a man in his 50s wearing a black hoodie, black pants and a blue jacket. One officer showed a photograph of a bearded man with gray hair to neighbors near the scene.
Here is some more info on the fire from KOMO News:
Family hit by arsonist twice in one week