Forensic science applies scientific principles of physics, chemistry, biology, computer science, engineering and other branches of basic and applied sciences to the matters of law. Forensic science plays a crucial role in the criminal justice system by providing scientifically justified information through the analysis of physical evidence.

The main objective of forensic science is to provide all parties involved in the criminal investigation with the necessary tools to achieve proper and thorough investigation of a crime scene and to analyze all the evidence that would lead to prosecution or exonerate the suspect(s). In many cases, even if the eyewitness of a crime does not cooperate with the investigator(s), scientific evidence properly collected from the crime scene may allow the investigators to solve the mystery of the crime. Many types of evidence obtained from the crime scene, the victim or the suspect may not be presented to the court of law as it is, and may require different instrumental analysis in order to extract presentable information associating with the crime.