With respect, the victim's DNA Profile can be obtained from the remains of the body - bones, organs, blood etc. which would assist in its identification, as in the tragic Tsunami of 2004. The Thai Forensic team used DNA profiling to help identify many of the victims, along with other means. For reference (Google):
Similarly, while DNA identified only 2% of adults from Finland, France, Germany, and Sweden combined, DNA was responsible for 30% of Thai adult identifications. By 16 July 2008, 3,308 victims were identified: 799 (24%) by DNA, 1,337 (40%) by dental, 1,142 (35%) by fingerprint, and 30 (1%) by physical characteristics.