The robbery was reported about 8 a.m. at the Walgreens at 20725 Highway 99, Lynnwood police spokeswoman Shannon Sessions said.
The man entered the store and demanded prescription painkillers from the pharmacist, she said. He ran away with the medication.
The robber is described as white, about 5-foot-10 and 185 pounds. He wore a baseball cap and a black sweatshirt.
Police urge anyone with information to call 425-670-5632.
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