(Portland, OR) -- Authorities say a licensed school teacher is accused of holding up a Plaid Pantry in northeast Portland. Ian William Mandis of Portland is currently on leave from his temporary math teacher position with the Parkrose School District. Mandis is facing a second-degree robbery charge after being accused of displaying a gun after entering the store on Northeast Glisan early Sunday morning and demanding cash. Police say they seized a replica gun from Mandis' home.