Drug Agents Arrest Three People in Knox County 

Three people are behind bars in Knox County facing drug charges after police arrested them in separate incidents earlier this month. One of them is accused of being a major cocaine dealer in the Rockland area. 45-year-old John Wall of South Thomaston is charged with selling cocaine and violating probation. Drug agents arrested him last week, hiding in a house in Monmonth. Police say he’s been eluding authorities since spring and was a supplier for several people who’ve already been charged with selling coke. 40-year-old David Libby of Rockland is accused of selling the prescription drug, Xanax.He was arrested two weeks ago. During the investigation, agents say they also discovered his fiance, 36-year-old Charlotte Shellman of Rockland, selling Xanax as well as the medication Ritalin.