WAUKESHA, Wis. (CBS 58) -- A now former Waukesha County correctional officer is facing charges after allegedly having sexual relations with an inmate while on duty. 

According to the Waukesha County Sheriff's Office, Matthew Herman, 49, also made sexual advances towards another inmate within the Waukesha County jail.

After a complete investigation, Herman was terminated and charged with three counts of second degree sexual assault by a correctional officer and one count of misconduct in office. 

The sheriff's office says Herman was hired in February 2020.

His next hearing is scheduled for Jan. 21.