A distant relationship?-investigation of correlations between DNA isolated from backspatter traces recovered from firearms, wound profile characteristics, and shooting distance.

International Journal of Legal Medicine
Jan EuteneuerCornelius Courts

Abstract

In molecular ballistics, where traces originating from the use of firearms against biological targets are investigated, "backspatter" traces are of particular importance. This biological material comprising blood and tissue from the victim is propelled back from the bullet entry site towards the direction of the shooter and can consolidate and persist on the inner and outer surfaces of the firearm, from where it can be collected and analyzed. Thus, a connection between the weapon and the victim can be established solely by molecular biological trace analysis. For the criminalistic investigation of gun-related crimes, the determination of the distance between the weapon and the victim can be of critical importance in reconstructing the circumstances of a crime. In this study, we investigated possible correlations between the shooting distance and the amount of backspatter in/on the used firearm. To this purpose, we employed a previously established skull model and performed shootings in triplicates from various distances up to 50 cm with two types of handguns (pistol and revolver). Backspatter was collected from various sampling locations, and DNA contents were quantified. A post-shooting wound channel evaluation was conducted b...Continue Reading

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Citations

Feb 18, 2021·International Journal of Legal Medicine·Jan Euteneuer, Cornelius Courts
Mar 10, 2021·International Journal of Legal Medicine·Jan EuteneuerCornelius Courts

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