(Beaverton, OR) -- A man who is accused of robbing two Dotty's lottery delis in Tualatin and Beaverton has been arrested. Early Monday morning, the suspect was armed with a gun when he stole cash and scratch-off tickets from the Tualatin store. Early Tuesday morning, he robbed a Beaverton Dotty's. Employees called police while the suspect was still in the store and they confronted him when he left. The suspect was armed with a gun when he ran. A K-9 helped take 28-year-old Marshall Richmond into custody.