A man missing since last Tuesday in northern Wisconsin was found dead over the weekend. Vilas County officials said Michael Larson's exposure to the cold may have been a factor. An autopsy is planned to determine how the 29-year-old Conover man died. After Larson disappeared, friends and relatives feared he might be in danger -- as he was possibly under the influence of drugs and could not care for himself. Vilas County sheriff's investigators said they found Larson's body on Saturday afternoon during a ground search of a wooded area hear his home.