NEW : Testing reveals remains belong to a male , officials say . Rib cage , spinal column and partial left femur bones among body parts found . Remains found on south bank of Des Plaines River . Score: 6
NEW : Testing reveals remains belong to a male , officials say . Rib cage , spinal column and partial left femur bones among body parts found . Remains found on south bank of Des Plaines River . Area is near homes of Stacy Peterson , Lisa Stebic .