Astoria, OR -

Astoria police say the arrest of two Californians last week has revealed an extensive credit and gift card scam, and they expect to find much more wrongdoing.

The Daily Astorian reports police have accused the two of manufacturing fraudulent gift cards, using a machine to put numbers on them and an algorithm to figure out which numbers computer systems would accept.

Police say the case involves several cities in California, Oregon and one other state they're not yet naming.

The suspects were identified as 34-year-old Bradley Stay of Fresno and 34-year-old Cherice Leona McMillian of Clovis.

Police say they got a tip from a suspicious clerk and arrested the pair in a Seaside motel shortly after the two returned from an outlet mall with thousands of dollars in merchandise.