Crime scene investigation processing is a task that is long and tiresome and involves documenting and gathering all types of physical evidence throughout the entire scene. In the end, more light will be shed on exactly what took place and who was responsible for what took place in the crime itself.
While at any crime scene, an investigator will collect evidence such as dried blood from a window pane. This is done by not allowing any part of their body to touch the glass in the event that there are unseen fingerprints that have not yet been detected. Furthermore, they may also choose to pick up hair from a victim’s jacket by using a pair of tweezers, all while not otherwise disturbing the jacket and accidentally shaking off any other important evidence. Additionally, the investigator may also choose to use a sledgehammer to break through a wall in order to reach the source of a strange smell.
Physical proof is only one small part of an investigation. The last objective is who is believed to have actually committed the crime itself. This means that when the investigator collects important evidence from the scene, whatever it may be, they think about the procedures that are needed to preserve all of this evidence in their present forms. The crime lab will be the most useful to help restructure the crime scene itself or even recognize those responsible for committing the crime, as well as ensuring that all evidence collected is able to be used in court.
The crime scene investigation process begins when this particular unit accepts a call from police who are on location at a crime scene. When investigators reach the scene, they start by ensuring that the entire location is completely secure. From there, the investigators will conduct a walkthrough of the entire area in order to get a feel for it, see if anything has been touched or moved, and come up with possible theories regarding what may have taken place. Investigators will then take notes regarding potential pieces of evidence that they see, but they will not physically touch anything at this stage.
Next, the investigators will conduct a second walkthrough of the crime scene, during which time they will take photographs and make sketches. Filming may also take place during this same walkthrough as well. Anything and everything that is determined to be important evidence will be documented during this stage. Again, nothing will be physically touched at this time.
Once all documentation has been completed, evidence collection will begin. This involves the investigator walking through the scene yet again and collecting, tagging, logging, and packaging all important evidence in order to ensure that everything remains intact while it is on its way to the crime lab. The crime lab will then process everything that has been collected and once the results are ready, the lead detective will then take charge of the entire case.
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