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Abstract Crime scene investigation is the meeting point of science, logic and law. ”Processing a crime scene” is a long, tedious process that involves purposeful documentation of the conditions at the scene and the collection of any physical evidence that could possibly illuminate what happened and point to who did it. There is no typical crime scene, there is no typical body of evidence and there is no typical investigative approach. The investigation of a crime scene begins when the CSl ( crime scene investigation ) unit receives a call from the police officers or detectives on the scene. The overall sysiem works something like this: * The CSI ( crime scene investigation ) unit arrives on the scene and makes sure thz.~ it is secure. Th~y do an initial ·.valk-through to get an overall feel for the crime scene, find out if anyone moved anything before they arrived, and generate initial theories based on visual examination, make note of potential evidence. At this point, they touche nothing. * The CSI ( crime scene investigation ) unit thoroughly documents the scene by taking photographs and drawing sketches during a second walk-through and Sometimes, the documentation stage includes a video walk-through, as well. They document the scene as a whole and document anything they have identified as evidence and They still touche nothing. ~5 . * The CSI ( crime scene investigation ) unit then systematicaJly makes its way through the scene collecting all potential evidence, tagging, logging and packaging it so that it remains intact on its way to the lab. * Fina11y, the crime lab processes all of the evidence the CSI ( crime scene investugation ) collected at the crime scene. When the lab results are in, they go to the lead detective on the case. Every CSI ( crime scene investigation ) unit handles the division between field work and lab work differently. What goes on at the crime scene is called crime scene investigation ,or crime scene analysis, and what goes on in the laboratory is called forensic ·science. Not all CSis (-crime scene investigator) are forensic scientists. Some CSis ( crime scene investigator ) work in the field only they collect the evidence and pass it to the forensic lab. In this case, the CSI ( crime scene investigation )must still possess a good understanding of forensic science in order to recognize the specific value of various types of evidence . |