The pair served at least 18 unsuspecting customers over a half-hour period early Tuesday morning and fled with an undisclosed amount of cash, Cmdr. Rick Dunn said.
The holdup early Tuesday began before opening time at a Monroe, Wash., Starbucks, when a woman was allowed to use the shop's restroom, Dunn said. After her accomplice also entered, the two approached the manager with guns, demanded that the safe be opened, and took the money.
The man then put on a Starbucks apron and he and the woman ordered an employee to assist them at the drive-up window, where they filled orders from 18 to 25 customers before fleeing. The other two employees were confined to a back room.
Police in Monroe, located about 25 miles northeast of Seattle, have appealed for information from early morning drive-in customers and Starbucks is offering a reward of up to $1,000 for information leading to the arrest and conviction of the robbers.
