Criminal Investigation: A Brief Review of Importance of Biological Evidence

In any society, crime is ingrained in each social experience. All crimes are investigated within the legal framework, and the criminal justice system seeks to apprehend the perpetrator and compensate the victims based on evidence beyond a reasonable doubt and Criminal investigative evidence is critical in this process. The Prime intention of this study is to discuss the concepts of Biological evidence in Criminal Investigation and its Positive Impact on the criminal investigation procedure. Attention will also be drawn to the importance of the Biological evidence; secondary resources related to the criminal investigation field were reviewed for this article. As the concepts of the study, evidence, Locard's exchange principle, circumstantial evidence, physical evidence, and biological evidence were classified; under biological evidence, 11 distinct types of evidence have been identified, including blood, semen, vaginal, secretion, saliva, urine, sweat, tears, faeces, nasal secretion and hair. Accordingly, Modern technology enables the identification of true perpetrators through the use of biological evidence discovered during a criminal investigation. The application of DNA analysis techniques has heightened the value of biological evidence. Biological evidence, in general, can be considered an important type of evidence in the modern criminal investigation process