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JEFFERSON COUNTY, Mo. (KSDK) – Jefferson County sheriff deputies arrested an 18-year-old for a robbery in Imperial, Mo. last week.

James Stephan faces first-degree robbery and armed criminal action charges related to a reported robbery at Phillips 66 gas station in the 5200 block of Warren Road.

According to Sheriff Glenn Boyer, the suspect walked into the store wearing a full-faced ski mask and asked the cashier about the price of cigarettes. The suspect then walked around the counter holding a knife and demanded money from the register.

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The clerk handed over an undisclosed amount of cash to the suspect, who then fled on foot.

Stephan is being held in Jefferson County Jail on a $50,000 cash-only bond.