RICHLAND, Wash. (AP) — Several campgrounds along the Naches River in central Washington were evacuated Sunday evening as a wildfire burned in thick forest about 25 miles west of Yakima.

U.S. Forest Service spokeswoman Robin DeMario said Monday that about 100 people at Camp Roganunda, a Christian camping facility, and others at two federal campgrounds were told to leave the area.

About 25 homes in the area were also evacuated.

State Route 410 remains open but travelers are advised to be careful because of firefighting operations in the area.

DeMario says no structures have burned and no injuries have been reported. The cause of the 100-acre fire, which started Sunday evening, is under investigation.