Law enforcement officials believe there may be more victims in a child sexual abuse case involving an 82-year-old Eau Claire man.
Robert Karstensen and a neighbor have been accused of repeatedly assaulting multiple victims over several years.
Investigators say Karstensen may have had further victims connected to his time at the Chetek River Campground in the 1990s.
Authorities urge anyone who may have been affected to contact police.
