The most difficult case load in BiH is the identification of Srebrenica remains. As a result of attempts by perpetrators to conceal evidence of this major atrocity, many bodies were removed from their initial mass graves and reburied in other locations. As a consequence, body parts are found disarticulated in numerous primary and secondary mass grave sites. ICMP forensic anthropologists use DNA analysis as a tool in re-associating disarticulated parts of the same body. In one case, ICMP identified a Srebrenica victim whose body parts were found in four different mass graves two of which were 20 km from the other two locations.