The Delaware State Police have arrested a 67-year-old Magnolia man for robbery and related offenses, following an armed robbery that occurred Tuesday night at a Valero gas station in Dover. With the assistance of the Dover Police Department, state police detectives identified Donald Johnson Jr. as the suspect in the robbery and obtained a warrant for his arrest. On July 29th, the Dover Police Department and the U.S. According to information from the police investigation, the suspect entered the store wearing dark clothing and threatened the clerk with a large knife demanding money. Johnson faces several felony charges and was committed to the Department of Correction on a $127,000 cash bond.