New DNA technique could ID bomb-makers

A new technique for analyzing DNA could allow investigators to link a bomb with the person who made it, according to published reports.

The detonation of a homemade bomb produces very high temperatures, leading to highly degraded DNA and difficulty in obtaining a useable DNA fingerprint. Stefanie Kremer of Michigan State University and her colleagues presented a different approach at the American Academy of Forensic Sciences conference in San Antonio, Texas, this past week.

The Guardian reports that Kremer and her team created pipe bombs using sterilized items to destroy any surface DNA. They then had volunteers handle the casings for 30 seconds. The bombs were then detonated in a sealed room and analyzed.

Of the 38 samples, 18 were linked correctly to specific handlers, according to the Guardian. In seven other cases, 'suspects' were narrowed down to one of three.

Police are also interested in using the technique to try to link shootings committed by the same gunman.