A drug trafficking organization that was busted up by the Drug Enforcement Agency and Bureau of Indian Affairs has resulted in a dozen people being sent to prison.The U.S. Attorney's Office for the Eastern District of Oklahoma announced the sentences Friday. It comes after a year-long meth investigation in Adair County and the Cherokee Nation.The focus of the investigation was 27-year-old Patrick Springwater of Stilwell. Investigators say Springwater led an organization that was responsible for the distribution of approximately six pounds of meth per month.Springwater was sentenced to more than 11 years in prison followed by 60 months of supervised release. In addition, 31-year-old Walter Pettit, Jr. of Bunch was sentenced to just over 10 years.Also sentenced were Stilwell residents 27-year-old Christopher Sanders (108 months), 23-year-old Carrie Littledeer (87 months), 24-year-old Dustin Wolfe (60 months), 27-year-old Melissa Smith (57 months), 53-year-old Dennis Hart (55 months), 34-year-old Jack Frogg (51 months), 39-year-old Johnny Grimmett (37 months), 45-year-old Brenda Locust (33 months) and Tahlequah residents 30-year-old Damien Cookson (41 months) and Carrie Caforia (37 months).Sentencing is pending for a 13th defendant, 23-year-old Amber Wolfe of Stilwell, who previously pled guilty."This case exemplifies what cooperation between diverse law enforcement agencies can accomplish," said U.S. Attorney Mark Green. "Cooperation is especially important when cases evolve in Indian Country. We commend all of the agencies involved. Indian Country is a priority of this office and we will continue with our efforts to stem the flow of methamphetamine and other illegal drugs in the Eastern District of Oklahoma."