The arrests announced Monday came over a six-day period. Hannibal police say the investigation has spanned several months. Suspects are from Hannibal and neighboring Missouri towns of Paris, Center and Monroe City, and from Quincy, Ill.
Police say drugs involved include marijuana, heroin, methamphetamine, LSD and cocaine. Officers say drugs are being brought into the Hannibal area from Columbia, Mo., and St. Louis.
More coverage from KTVO's sister station in Quincy, Ill., KHQA-TV