Special prosecutor named in slaying of three sisters in River Falls, Wis.

RIVER FALLS, Wis. -- A special prosecutor will lead the case against a father charged with killing his three young daughters in River Falls.

Assistant Attorney General Gary Freyberg will prosecute Aaron Schaffhausen. The St. Croix district attorney asked for help because of the complexity of the case.

WCCO-TV reports the prosecution plans to file a motion requiring Schaffhausen to attend his preliminary hearing in person, not by video conference as his attorney indicated Schaffhausen would prefer.

Eleven-year-old Amara, 8-year-old Sophie and 5-year-old Cecilia Schaffhausen were killed at their home in River Falls last week.