An Atlantic woman was arrested Monday for Unlawful Possession of Prescription Medication. The Police Department reports 32-year old Abigail Lennon was booked into the Cass County Jail and held pending an initial appearance before the magistrate. And, 22-year old Steven Pedersen, of Atlantic, was arrested Monday on a Cass County warrant charging him with being an Accessory after the Fact. Pederson was booked into the Cass County Jail and also held, pending a court appearance.