Investigators are on the scene of an apartment fire in Gresham.
The fire started just after 6 a.m. Saturday morning near Southeast Stark and 176th.
Firefighters said they were dealing with such heavy smoke that they called for a second alarm to bring more crews to the scene.
Officials said no one was injured, but six people are not able to get back into their apartments.
Investigators have not determined what caused the fire.
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