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Forensic Science Crime Scene Investigation Final Exam

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Final Exam

Tasks of Preliminary Investigation

A preliminary investigation is the actions taken at the scene of a crime immediately following its detection and report to the police. This may include; receiving the information about the crime and initial response, providing emergency care to victims, crime scene control, putting out BOLO alerts, crime scene determination, gathering evidence, and the report. So, a preliminary investigation basically consists of securing the crime scene, determining where exactly the crime scene is going to be, controlling the crime, and all the little things in between. The senior officer and his partner are responsible for this. The first and most important step in any crime scene investigation is to secure the scene. The crime scene should be approached in a manner that maximizes the safety of any potential victims, witnesses, others in that area, and the officers on the scene. Officers should work to preserve and protect any evidence that could potentially be lost or compromised from weather; (footprints and tire tracks). Once the crime scene is secured, officers should control the scene by identifying and removing people that don’t belong from the crime scene. Controlling the crime scene is described as the actions which the first arriving officer(s) at the crime scene take to make sure that the integrity of the scene is maintained. This can prevent contamination of any evidence, and/or destroying physical evidence. The first responding officer will provide a lot of information on what was found upon arrival, what has been touched, moved or removed. Controlling the crime scene shall restrict movement and location while still ensuring and maintain safety at the scene. The identification of all people at the scene is very important. The first responding officers shall identify any suspects,

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