Crews have completed their search of the Fond du Lac River after a citzen reported seeing what they thought may have been a human hand in the river. Sheriff Ryan Waldschmidt says sonar images identified several items of interest, all of which were examined further and visually confirmed to be debris. No human body or body parts were located, and the Fond du Lac Police Department is closing their investigation. The search focused on an area of the river near North Lincoln Street South of Johnson Street.