GRESHAM, Ore. – Authorities are searching in the Columbia River Gorge for a 30-year-old Gresham woman who has not been since April 4.

The Multnomah County Sheriff's Office located Susan Behrens' vehicle late Tuesday morning near the Eagle Creek Recreation area. The sheriff's office is working with Gresham police to find Behrens, who was described as about 5-foot-4 and 110 pounds.

Crews spent Wednesday looking for Behrens before stopping at night. They plan to head back out Thursday morning.

“We don't know her intended route or how long she planned to be out here,” said Lt. James Eriksen with the Multnomah County Sheriff's Office.

Anyone who knows where Behrens is should call Gresham police at 503-823-3333.