YORK, Neb. (AP) — A September trial has been scheduled for a man accused of having a sexual relationship with an inmate at the women’s prison in York.

Michael Weichman, of Bradshaw, pleaded not guilty on Monday to a charge of sexually assaulting an inmate. The 47-year-old Weichman was a staff maintenance employee at the prison. He resigned last month.

Investigators say another inmate tipped prison officials that Weichman and the other inmate were having sex. Under Nebraska law, any prison or jail worker who has sex with an inmate has committed sexual assault.

A court document says Weichman described his relationship with the inmate as playful but not sexual. She’d been assigned to do maintenance work while serving time for child abuse resulting in death.