Sequoyah County Courthouse
120 East Chickasaw
Sallisaw, OK 74955
Probation, 991 Case, Drug Fund – (918) 775-9131
Bogus Check and Restitution – (918) 456-6649
Tip Line – (918) 772-7568
Sequoyah County is located on the eastern state line with Arkansas. Named for the Sequoyah District of the Cherokee Nation and for the Sequoyah (George Guess) who was credited with introducing literacy to Cherokee people, the county borders Muskogee County on the west, Haskell and LeFlore Counties on the south, and Adair and Cherokee Counties on the north.
Major towns in the 715-square-mile Sequoyah County include Gans, Gore, Marble City, Moffett, Muldrow, Vian, and the county seat of Sallisaw.
Stacey Slaughter is the managing attorney for the Sequoyah County office. She has been an assistant district attorney with District 27 since January 1, 2011, specializing in cases that involve victims. Her caseload includes child abuse, rape, larceny and burglary.
Prior to joining the District 27 team, Slaughter worked for the LeFlore County District Attorney’s Office.
Upon graduation from the University of Arkansas College of Law, Slaughter served 22 years at the Sebastian County District Attorney’s Office in Arkansas.
Assistant District Attorney Michael Dunagan handles civil matters in the district’s Sequoyah County office. The veteran attorney has garnered 30 years of experience in both criminal and civil law throughout Oklahoma and Arkansas. A graduate of the University of Tulsa College of Law, Dunagan worked in the District 16 District Attorney’s Office from 1995-2004 before entering private practice. He joined the District 27 District Attorney’s Office in 2016 where he also prosecutes misdemeanors, felonies and juvenile cases.
Will Cosner has served District as an ADA for four years, prosecuting cases ranging from unlawful possession of a controlled substance, to trafficking in controlled substances, to possession of a firearm after a felony conviction. He’s also prosecuted violence against police officers in Sequoyah County.
Cosner was raised on a farming and ranching operation in Gans, Oklahoma, and went on to obtain an undergraduate degree from Oklahoma State University. He landed in the district shortly after graduating with his Juris Doctor from Oklahoma City University Law School. Will’s duties encompass Sequoyah, Adair, Cherokee and Wagoner Counties.
Leanne K. Sloan serves the district as an assistant district attorney in both Sequoyah and Adair Counties, specializing in Child Support Services.
Sloan assists families in all aspects of child support enforcement, managing the day-to-day business of the child support office and its five employees. She reviews and negotiates the terms of the annual state child support contract, oversees state and federal child support performance measures for the district’s offices, and manages state and federal audits for the office (including annual IRS audits).