Allegations of abuse by a resident has both state and federal agencies investigating a Sauk City nursing home.  Galen J. Malisch was accused of sexually assaulting two other residents at Maplewood of Sauk Prairie last month.  Malisch is charged with a half-dozen counts, including sexual assault and abuse.  He’s also charged with failing to update sex offender registry information.  He had been convicted of sexual assault in 1990.  He made a Sauk County Circuit Court appearance Wednesday by video conference and has a preliminary hearing set for next month.