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EN
The obligation to prosecute the perpetrator of any crime throughout the entire period of its punishability is one of the statutory tasks of the Police. The prominent forensic scientist — Hans Gross claimed that crime is not an abstract and theoretical entity out of touch with reality, but a real social phenomenon that can be investigated and recognised. Nevertheless, archive shelves contain records of undetected crimes from the past years that cast a shadow over police statistics and never give investigators any peace of mind. These undetected crimes from a few, a dozen or even several dozen years ago, are reinvestigated by officers from the Cold Case Units (colloquially referred to as the Police X-Files). Currently, such a unit operates in each regional police headquarters as well as in the National Police Headquarters. The methods and means that the X-Files investigators take advantage of depend on the specificity of an individual case, however, in the model of their conduct, it is forensic science that plays a significant role — alongside covert policing or criminal analysis. Physical evidence plays a huge role in determining the objective truth, and thanks to the research methods and tools currently available to crime scene investigators, the boundaries of learning about the reality are expanding. Despite the passage of time, the purpose of criminal proceedings is achieved, i.e. perpetrators of many crimes committed years ago are identified and brought to justice.
EN
The article addresses the issues relating to the operations of the police Cold Case Units as well as the role of modern forensic tools in solving cases that were dismissed at the pre-trial stage, due to a failure to detect the perpetrators. The second part of the article describes selected methods and tools used at different stages of the X-Files investigations. The innovative solutions described are classified according to the place and purpose of application. Exemplary cases which have been solved with the use of innovative technological solutions are indicated.
PL
Artykuł porusza problematykę związaną z istotą funkcjonowania policyjnych Zespołów ds. Przestępstw Niewykrytych oraz rolą nowoczesnych narzędzi techniki kryminalistycznej w rozwiązywaniu spraw umorzonych na etapie postępowania przygotowawczego ze względu na niewykrycie sprawców. W drugiej części opracowania opisano wybrane metody i narzędzia znajdujące zastosowanie na różnych etapach działań śledczych z policyjnych Archiwów X. Wyróżniono przy tym podział ze względu na miejsce i cel wykorzystania danej innowacji. Wskazano przykłady spraw, które zostały rozstrzygnięte za pomocą innowacyjnych rozwiązań technologicznych.
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