Persistence of biological traces at inside parts of a firearm from a case of multiple familial homicide

Courts, Cornelius; Gahr, Britta; Madea, Burkhard; Schyma, Christian (2014). Persistence of biological traces at inside parts of a firearm from a case of multiple familial homicide. Journal of forensic sciences, 59(4), pp. 1129-1132. Wiley 10.1111/1556-4029.12434

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Backspatter from wounds caused by contact shots against a biological target had before been shown to be propelled into firearms' barrels where they can persist and be retrieved from as relevant forensic evidence. Herein, that insight was applied to the investigation of a case of multiple familial homicide with a firearm. Samples of backspatter were collected from the firearm using DNA-free swabs. DNA was extracted from the swabs, and 16 STR systems were PCR-amplified to generate DNA profiles of all victims shot by the firearm. The quality of the resulting DNA profiles was sufficient to exclude the perpetrator as donor and to differentiate the three closely related victims thereby proving that all three victims had been shot by the same firearm from very close or contact distance. A key insight gained from this case was that not only a firearms' barrel inside but other inner surfaces may be charged with profilable DNA.

Item Type:

Journal Article (Further Contribution)

Division/Institute:

04 Faculty of Medicine > Service Sector > Institute of Legal Medicine
04 Faculty of Medicine > Service Sector > Institute of Legal Medicine > Forensic Medicine

UniBE Contributor:

Schyma, Christian

ISSN:

0022-1198

Publisher:

Wiley

Language:

English

Submitter:

Antoinette Angehrn

Date Deposited:

30 Jan 2015 16:36

Last Modified:

19 Nov 2015 16:22

Publisher DOI:

10.1111/1556-4029.12434

PubMed ID:

24528165

Uncontrolled Keywords:

forensic science, forensic ballistics, forensic genetics, firearms, homicide, trace DNA

BORIS DOI:

10.7892/boris.62290

URI:

https://boris.unibe.ch/id/eprint/62290

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