Abstract
The use of DNA databases has proved decisive in many types of criminal investigations. Particularly, in sexual assaults and rapes, DNA databases and biological evidence play a very important role in the investigations and in the identification of the perpetrators. In Brazil, until 2012 and 2013, there was no law regarding DNA databases from suspects or convicted individuals. Due to the lack of legislation concerning this subject and the need for solving crimes related to sexual assaults, the Forensic DNA Research Institute of Federal District Civil Police created in 1998 the first DNA database of biological evidence from sexual assaults and rapes in Brazil to aid criminal investigations. The aim of this study is to demonstrate the successful experience of our institute in aiding criminal investigations in solving crimes using this kind of DNA database. Forensic scientists using a DNA database of evidence from sexual assaults and rapes working together with Federal District Civil Police authorities and investigators found fifty four serial rapists who had attacked one hundred and fifty five women in Brasília, Brazil.
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