The Tecumseh State Correctional Institution (TSCI) is a medium / maximum security state correctional institution for the Nebraska Department of Correctional Services. The TSCI is in Nemaha Township, Johnson County, about two miles north of Tecumseh, Nebraska, it was established in 1997. Construction began in 1998, and the TSCI began accepting inmates in December 2001. All inmates at TSCI are males who were adjudicated as adults and classified as medium or maximum custody.