Hence, every forensic lab is confronted with cases where the DNA profile obtained from the evidence material does not match that of any known suspect tested, nor anybody in the criminal DNA database.
Sadly, as a number of high-profilecriminal cases against whistle-blowers show, the Obama administration has followed its predecessor in aggressively cracking down on unauthorized leaks.
Since that time, a number of more sophisticated techniques have been developed to determine the "geographical profile" of a suspected serial criminal based on the locations of the crimes.