Police in Atlantic report the arrest on drug charges, Thursday, of 24-year old Cheyenne Register, of Atlantic. Register was charged with Unlawful Possession of a Prescription Drug, and three counts of Possession of a Controlled Substance. And, 33-year old Juan Anaya Mendez, of Atlantic, was arrested Thursday on a Cass County warrant for Theft in the 4th Degree. Mendez and Register were booked into the Cass County Jail.