Crime Scene Investigation Procedures
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Crime Scene Investigation Procedures

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Questions and Answers

What is essential for maintaining the integrity of physical evidence during collection?

  • Preserving evidence in its original state (correct)
  • Using non-disposable gloves
  • Moving evidence immediately to the crime lab
  • Wrapping items together

    • What is a key requirement of the chain of custody regarding evidence packaging?

  • Only one person can handle the evidence
  • Items can be wrapped together for convenience
  • The evidence does not need to be documented
  • The seal on the packaging must never be broken (correct)

    • Why should evidence remain unmoved until documented?

  • To minimize time spent at the crime scene
  • To maintain a clear picture of its original placement (correct)
  • To allow others to inspect it
  • To prevent contamination

    • What is the purpose of using disposable gloves during evidence handling?

    <p>To avoid contamination of the evidence</p> Signup and view all the answers

    How should evidence be packaged to ensure proper documentation?

    <p>Using appropriate packaging sealed with evidence tape</p> Signup and view all the answers

    What is a bindle commonly used for in forensic evidence collection?

    <p>To ensure tiny evidence is not lost</p> Signup and view all the answers

    What happens to evidence while it is being transported to the crime lab?

    <p>It must be kept with the chain of custody log</p> Signup and view all the answers

    How should evidence be handled to prevent cross-contamination?

    <p>By handling each piece individually and wrapping them separately</p> Signup and view all the answers

    What critical role does evidence play in a criminal case?

    <p>It can be used to convict, exonerate, or prove a defendant not guilty.</p> Signup and view all the answers

    Which group is typically involved in documenting the crime scene?

    <p>Crime scene investigators</p> Signup and view all the answers

    What is the first step a crime scene investigator must take when arriving at a scene?

    <p>Secure the scene.</p> Signup and view all the answers

    What does the chain of custody refer to in crime scene investigations?

    <p>The sequence of custody, control, transfer, analysis, and disposition of evidence.</p> Signup and view all the answers

    Which of the following is NOT one of the 7 overall steps in crime scene investigation?

    <p>Skimming the Scene</p> Signup and view all the answers

    What does 'seeing the scene' involve in crime scene investigation?

    <p>Performing a detailed walk-through to identify crucial evidence.</p> Signup and view all the answers

    What is the first priority when responding to a crime scene?

    <p>Obtaining medical assistance and arresting the perpetrator</p> Signup and view all the answers

    Which specialists may be called upon during a crime scene investigation?

    <p>Entomologists, psychologists, and sketch artists, among others.</p> Signup and view all the answers

    Why is it important to separate witnesses at a crime scene?

    <p>To ensure they do not influence each other's accounts</p> Signup and view all the answers

    What is the significance of the first officer at the crime scene?

    <p>They must ensure the area is preserved and protected.</p> Signup and view all the answers

    What should be done once evidence markers are placed at a crime scene?

    <p>Photograph the marked evidence</p> Signup and view all the answers

    How is a rough sketch of the crime scene created?

    <p>By depicting dimensions and evidence locations that match photographs</p> Signup and view all the answers

    During the scanning of the crime scene, what is the primary purpose of this action?

    <p>To quickly record the scene and mark evidence</p> Signup and view all the answers

    What occurs during the searching of the crime scene?

    <p>A detailed search with a designated pattern</p> Signup and view all the answers

    Which of the following accurately describes the role of forensic photography at a crime scene?

    <p>It documents the evidence as it is marked at the scene</p> Signup and view all the answers

    What does the crime scene log entail?

    <p>Documentation of all individuals entering and exiting the scene</p> Signup and view all the answers

    Study Notes

    Securing The Crime Scene

    • First responders secure the scene, providing medical assistance and apprehending the perpetrator.
    • All unauthorized individuals are excluded, using barricades, ropes, and guards.
    • Crime scene logs document every person entering and exiting the crime scene, recording their time of entry and exit.

    Separating Witnesses

    • Witnesses are separated to prevent them from talking to each other and influencing each other's accounts.
    • Investigators compare witness statements to gain a better understanding of the event.
    • Common questions include: What did you see? Where were you when you made this observation? Did you see anyone else? Do you have any information that may be helpful to us?

    Scanning The Crime Scene

    • First responders and investigators quickly scan the scene, marking evidence with evidence markers.
    • Documentation begins immediately to create a record of the scene.
    • A more thorough search is conducted later.

    Seeing The Scene

    • A trained forensic photographer photographs the scene, capturing each piece of evidence.
    • Photographs are taken every time new evidence is marked.
    • The procedures for taking photographs are reviewed later.

    Sketching The Scene

    • A crime scene investigator creates a rough sketch of the scene, depicting its dimensions and showing the location of all evidence.
    • The sketch is aligned with the photographs and evidence markers.
    • This process is further explored in a later lesson.

    Searching The Scene

    • A more detailed search is conducted, with investigators diligently searching to find all evidence.
    • A search pattern is established to ensure that no area is left unsearched.
    • Any new evidence is marked, photographed and documented in the sketch.
    • Details about search patterns are further discussed in a later lesson.

    Securing And Collecting Evidence

    • All evidence, regardless of size, is preserved in its original state.
    • Evidence is carefully handled and wrapped separately to prevent cross-contamination.
    • The search for evidence extends beyond the crime scene, even including the body during an autopsy.

    Chain Of Custody

    • The chain of custody is the process of safeguarding evidence from the crime scene to the lab.
    • Evidence is packaged in a specific way:
      • Using the appropriate packaging materials.
      • Sealing the packaging with evidence tape.
      • Signing the evidence tape with the collecting officer’s signature.
      • Ensuring the seal remains unbroken and avoiding puncturing the signed evidence label if processing is needed.
      • A chain of custody log must be filled out with signatures matching those on the evidence labels.
      • Chain of custody logs must travel with the evidence and reflect every person who has handled it.

    Bindle

    • Tiny pieces of evidence are secured in a bindle, also known as a druggist’s fold.
    • This method prevents the loss of evidence.

    Next Steps

    • Once evidence is collected, it is transferred to a crime lab for further analysis.

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    Related Documents

    Investigative Processes Lesson PDF

    Description

    This quiz covers essential procedures in crime scene investigation, including the roles of first responders and the importance of securing the scene. It also discusses methods for separating witnesses and collecting evidence effectively. Test your knowledge on these critical practices in forensic science!

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