ELLENSBURG, Wash. -- Crews are working to extinguish a wildfire off Interstate 90 near Ellensburg.
Authorities had said the fire was under control after it had spread about 75 acres.
As of 5:20 p.m. Sunday, Washington State Department of Natural Resources tweeted that the fire spread more than 100 acres and continues to spread fast.
Five planes and a Washington National Guard helicopter is on the scene.
Washington State Patrol Trooper Brian Moore says a pickup truck initially caught fire sparking the blaze.
Drivers should expect stop and go traffic for about 10 miles on westbound I-90 near Milepost 126, according to Moore.
We'll update this article when more information becomes available.