(MT. VERNON, IL) — A Jefferson County grand jury has handed down a bill of indictment against an 18-year-old Mt. Vernon man in connection with the armed robbery of a Casey’s General Store. The bill of indictment against Harley D. Pulley was filed Friday in Jefferson County Court, charging him with Class X armed robbery with a firearm and Class 4 felony theft under $500. A Class X felony is punishable by between 6 and 30 years in prison if convicted and a Class 4 by between 1 and 3 years. A Class X is not probationable. He has pleaded not guilty to the charges and has demanded a jury trial. He is next due in court February 9 for a pre-trial hearing in the case. Pulley was arrested Christmas Eve as the result of a joint investigation between the Mt. Vernon and Salem police departments into the December 23 armed robbery of the Casey’s General Store at 617 Salem Rd. in Mt. Vernon. Less than 24 hours after the Mt. Vernon robbery, the Casey’s General Store in Salem was also robbed at gunpoint on Christmas Eve morning. The investigation continues into the involvement of the second offender and possible involvement with previous robberies in Mt. Vernon. Pulley remains in the Jefferson County Jail. Pulley was arrested and charged in September with a September burglary to a Mt. Vernon home. He pleaded guilty and was sentenced in October to 36 months probation, along with 90-days in jail. He was arrested December 16 on a charge of violating bail bond, but was ultimately released from jail.