Department of Corrections Inmates back in Custody after being placed on Escape Status By mykxlg.com- Troy VanDusen Published: 02/26/2021 A minimum-security state prison inmate who walked away from the Yankton Community Work Center back in November 2020 is in custody. Inmate Seth Boocock was arrested on Tuesday in Sioux Falls. He is currently being housed in the Minnehaha County Jail. Boocock was one of three inmates who walked away from the Yankton facility Nov. 27. Inmate Matthew Fritz-Chappell was arrested last week in Rapid City. Inmate Corey Bales remains on escape status.