3 teens are in custody after an armed robbery at the Moto Mart gas station in Murphysboro. Police reports indicate a masked black male entered the store with a knife and demanded money around 4am at the store on the corner of Williams Street and Rt. 13. The suspect initially got away with over 400$. Police obtained a warrant to search a home in Murphysboro where a 13-year-old boy was arrested. At another location a 14-year old boy and a 15-year-old girl were taken into custody. All three were charged with armed robbery and were booked at the Franklin County Juvenile Detention Center.