Police say they have arrested two Portland residents on suspicion of robbing a Vancouver branch of Umpqua Bank on Friday.Dale A. Roane, 48, and Brenda L. Westberg, 47, were arrested at her home at 8740 N. Curtis Ave. in Portland, according to a police news release. They are being held in the Multnomah County Jail until extradition to Clark County.They’re accused of robbing a branch of Umpqua Bank at 6501 E. Mill Plain Boulevard. About 3:15 p.m. Friday, a thin man in his 40s wearing a wig entered the bank and presented a note demanding money. He fled with some cash.A witness reported seeing a man matching the robber’s description climbing into a car parked behind a nearby business. There was reportedly a second person in the car. The witness got the license plate number and reported it to authorities.An initial search of the area for the robber and the car were unfruitful.