Sheriff’s officials in Adams County say a Polk County woman was arrested Saturday evening on drug charges. 40-year old Margaret Rhoads, of Des Moines, was taken into custody at around 6:30-p.m., following a traffic stop for speeding. Rhoads was also arrested for Driving While Suspended. A search of her vehicle by the Adams County K-9 unit resulted in the discovery of marijuana and drug paraphernalia. Rhoads was subsequently charged with Possession of Marijuana and Drug Paraphernalia. She was being held this (Sunday) morning in the Adams County Jail on $1,748.50 bond.