LINCOLN, Neb. (AP) — The Nebraska Supreme Court has upheld a former prison worker’s conviction and 1- to 2-year sentence for having sex with an inmate at the women’s prison in York.

Michael Weichman, who had been a staff maintenance employee, was convicted in March. State law says any prison or jail worker who has sex with an inmate has committed sexual assault.

In his appeal, Weichman argued that statements he made during a polygraph test admitting to the sexual relationship should not have been allowed. He also argued that the inmate’s statements acknowledging the sex should have been thrown out.

On Friday, the high court rejected Weichman’s arguments, saying he was aware he did not have to take the polygraph test and that he had been informed of his right to remain silent.