Two families escape apartment complex fire in SeaTac

SEATAC, Wash. -- Two families were displaced when fire ripped through an apartment building Thursday morning in SeaTac.

Fire officials said bystanders helped people get out of their homes safely.

Crews responded to the two-alarm fire around 8;15 a.m. in the 19000 block of 11th Place S.

Half of the building was on fire when they arrived. They quickly knocked down the fire.

It's unclear what caused the fire.