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– 3rd Edition
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SOLUTION
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MANUAL
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Ashraf Mozayani & Casie Parish- Fisher
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Complete Solution Manual for Instructors and
Students
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© Ashraf Mozayani & Casie Parish- Fisher
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All rights reserved. Reproduction or distribution without permission is prohibited.
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©MEDGEEK
, Solutions Manual for Forensic Evidence
Management, 3e by Ashraf Mozayani, Casie
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Parish-Fisher (All Chapters)
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Chapter 1
1. What is the principle to a successful management of evidence at a crime scene?
Scene security
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2. What needs to be documented to ensure the integrity of a scene? What will happen if
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changes are undocumented?
Any disruptions to the scene (or any items within it) from the condition found by
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initial responding officers must be documented in their report. Any manipulation of
the scene including for medical or safety reasons must be documented.
Undocumented changes to the scene and items within it degrade the evidence, bring
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the investigating agency’s credibility into question, and are likely to negatively affect
forensic analysis and lead to the inadmissibility of the physical evidence.
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3. What should the preliminary documentation of a scene include?
Preliminary documentation includes notes and rough scene sketches of the location
as they were found by investigators during an initial walk-through. This initial
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documentation may include the investigator’s own relevant observations of the
condition of the crime scene and items within it as well as information from first
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, responders that relates to changes made to the crime scene due to medical
intervention or for safety reasons during the time period between the initial
response and the arrival of the investigator. While the first responders may relay
such information to investigators, the investigators should request that the first
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responders include the information in their own reports.
4. What should be recorded in the scene documentation prior to the collection of any
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physical evidence? Why?
Recording the condition, position and location of physical evidence prior to
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collection provides critical information and context to the investigation. A well-
documented scene ensures the integrity of the investigation and provides a
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permanent record for later evaluation. Failure to accurately and completely
document the crime scene may negatively impact follow on forensic analysis
including crime scene reconstruction and judicial proceedings.
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5. What should be included in the crime scene notes? When should notes be taken?
Notes should be taken continuously throughout the scene investigation. Included in
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the documentation should be observations of the scene as it appears and items
deemed to be of potential evidentiary value. In addition to contextual data about the
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scene (date, location, time) transient evidence (odours, sounds) and conditions
(weather, temperature) should also be noted. Just as any processing done on scene
should be documented, so should any situations which require deviation from
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standard procedures.
6. Why is diagramming used?
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, Diagramming is used to specifically describe the location of items of potential
evidentiary value in situ prior to collection, the location of items of potential
evidentiary value relative to other objects present and other potential evidentiary
items, and the physical scene. Diagrams are generally presented to scale to
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accurately convey the size, shape and position of significant items and other features
of a crime scene.
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7. What are the general guidelines for the investigator during collection of physical
evidence?
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• Collect items or samples from items that are sufficient for further forensic
examination. The type of examinations the item will be subjected to should
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be taken into consideration.
• Collect appropriate control and known samples.
• Avoid collecting material that is not relevant to the investigation or does not
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provide relevant information.
• Minimize potential contamination or cross-contamination of the items
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collected. Care should be taken to avoid cross-contamination between
involved persons, victims, evidence items, equipment, the collector and
scenes. Victim and suspect samples should be collected and packaged
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separately. Tools utilized in collection or sampling should be disposable or
suitably cleaned and sanitized between samples. All collection equipment and
packaging should be sterile and DNA free. Appropriate personal protective
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equipment (PPE) should be worn.
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