2022, Vol. 4, Issue 4, Part C

We have needs to use scientific methods in investigation for collection of evidence and to ensure that evidence is collected and retained without being contaminated and altered, packed and sent in a scientific and safe manner to the lab is challenge before the investigating agency where the advance techniques are used and applied to extract evidence that will link the evidence to the scene of crime and finally identify criminal so that he or she may be successfully behind the bar of justice. In spite of the increased attention paid to forensic evidence over the past decade, there is published empirical data identifying the types of evidence routinely collected, and the extent to which this evidence is submitted to and examined in forensic crime laboratories. There is even less research that describes the role and impact of such evidence on criminal justice outcomes. While the current study shows that forensic evidence can affect case processing decisions, it is not uniform across all crimes and all evidence types; The effects of evidence vary depending upon criminal offense, variety of forensic evidence, the criminal decision level, and other characteristics of the case.