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Occasion Crime Scene Investigators

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On occasion crime scene investigators or lab personnel may have to testify in an array of courtroom proceedings, these range from preliminary hearings, pretrial motions, and the trial itself (Buckles, 2007.) It is important for the investigators to be well prepared and follow a methodical plan of investigating and evidence gathering before the process of going to trial even begins (Buckles, 2007.) Initial court appearance does not require the presence of investigators or lab personnel; however, when the time comes to present the evidence to the judge to establish probable cause that a crime was indeed committed and the defendant was the perpetrator of the crime the presence of the personnel and investigators are then required (Buckles, 2007.) …show more content…
Occasionally, the defense requests a motion to suppress evidence from being admitted at trial for various reasons including the ability to prejudice the jury, or to challenge the way scientific evidence was collected, tested, or analyzed (Buckles, 2007.) In situations where the scientific evidence comes into question some crime scene investigator or lab personnel may need to testify to the authenticity or to support the prosecutions testimony (Buckles, 2007.) Technicians might be called to testify that a photo is accurately portrayed, or a criminalist to testify about the standards of testing, collection, or analysis of evidence (Buckles, 2007.) Crime scene investigators and personnel will also create the foundation of the scientific evidence presented at trial, in addition to identifying and authenticate evidence including offering scientific opinions on how evidence is obtained and used (Buckles,

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