stankiewicz. essential questions and learning what is the purpose of criminal investigation? what...
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STANKIEWICZ
CriminologyCriminal Investigations, Crime Scene
Investigations, and Evidence CollectionLesson 7
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Essential Questions and Learning
• What is the purpose of criminal Investigation?• What are the basic steps in criminal investigations?• What are the basic steps involved in crime scene
investigations?• How do investigators collect evidence?
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Purpose/Goal of Criminal Investigations
• The criminal investigations always challenging
• ____________________________________
• The eventual goal of criminal investigations ______________________________________________________________________________________________________________________________________________________________________
Reference: US Department of Homeland Security
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Warning
This lesson is for educational use only. Do not attempt investigations on your own
Law enforcement should always “Follow Agency Policies!”
Actions taken should be performed in accordance with department policies and procedures and federal and state laws
Jurisdictional, logistical or legal conditions may preclude the use of particular procedures explained
_________________________________________!
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Crime Scene Investigation Steps According to the National Institute of Justice
•_____________________________________•_____________________________________•_____________________________________•Completing and __________________________________________________________________________
Reference: National Institute of Justice: A Guide for General Crime Scene Investigation. National Institute of Justice Website - http://nij.gov/topics/law-enforcement/investigations/crime-scene/guides
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The National Institute of Justice
The National Institute of Justice — the research, development and evaluation agency of the U.S. Department of Justice — is dedicated to improving knowledge and understanding of crime and justice issues through science. NIJ provides objective and independent knowledge and tools to __________
_______________________________________________________________________________________________________________
Website: http://www.nij.gov/about/welcome.htm
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NOTE
When we go through the steps please realize that this is by no means a complete “How to Lesson”
There is a great deal for any investigator /Law enforcement personnel to know prior to any investigation
This information is very basic. Thorough investigations are conducted by highly trained individuals. This information only scratches the surface
_______________________________________
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Arriving at the Crime Scene – 1Basic information
________________________________Law enforcement must be cautious and
methodical______________________________________________
______________________ and should not disturb physical evidence
____________________________________
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Arriving at the Crime Scene – 2Basic information
Follow safety procedures. _______________________________________________________________________________________________________________________
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Arriving at the Crime Scene – 3Basic information
Be aware of ______________________________________________________________________________________________________Approach the scene cautiously,
_____________________________, and note any possible secondary crime scenes
Make initial observations (look, listen, smell) to ____________________________________________________________________________________________________________
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Arriving at the Crime Scene – 4Basic information
_________________________________________________________________ until it has been assessed and determined to be otherwise
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Arriving at the Crime Scene – 5Basic information
Control all individuals at the scene _______________________________________________________
________________________________________________________________________________________________________________________________________________________________
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Arriving at the Crime Scene – 6Basic information
Identify all individuals at the scene, such as: Suspects. __________________________________________ _______________________. Secure and separate Bystanders.
__________________________________________________________________________________________________
Victims/family/friends. _________________________________ Medical and other assisting personnel
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Arriving at the Crime Scene – 7Basic information
_____________________________________________________________________ (e.g., law enforcement officials not working the case, politicians and ____________)
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Documenting the Crime Scene – 1
Once the investigator in charge of the crime scene arrives, he or she should:
___________________________________________ Conduct a scene walkthrough and ___________________
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Documenting the Crime Scene – Conducting a Crime Scene Assessment - 1
Step 1Conduct a scene assessment
_____________________________________________________ Share preliminary information _____________________________________________________
_______________________________________________________________________________________________________________________________________________________________
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Documenting the Crime Scene – Conducting a Crime Scene Assessment - 2
The investigator(s) in charge should:
_________________________________________ about observations and activities
Evaluate safety issues that may affect all personnel entering the scene(s)
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Documenting the Crime Scene – Conducting a Crime Scene Assessment - 3
Evaluate search and seizure issues to determine the necessity of obtaining consent to search and/or obtaining ______________________________________________
Evaluate and ______________________________ to the scene that can be utilized by authorized personnel
___________________________________________
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Documenting the Crime Scene – Conducting a Crime Scene Assessment - 4
Determine the number/size of scene(s) and prioritize which should be investigated first
______________________________________________________________________________________________________________________________________________________________________________________
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Documenting the Crime Scene – Conducting a Crime Scene Assessment - 5
If multiple scenes exist, ____________________________________________________________________________________________________________
Establish a secure area __________________________________ storage in accordance with rules of evidence/chain of custody
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Documenting the Crime Scene – Conducting a Crime Scene Assessment - 6
Request additional investigative resources as required (e.g., personnel/specialized units, legal consultation/prosecutors and/or equipment)
____________________________________________ (e.g., document entry/exit of authorized personnel and prevent _______________________________________
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Documenting the Crime Scene Conducting a Crime Scene Assessment - 7
Ensure that witnesses to the incident are identified and separated. ____________________________________________________
Ensure the surrounding area is canvassed and the results of this canvassing are documented
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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Crime Scene Walkthrough - 1
Step 2______________________________________________
______________________________________________________________________________________________________________________________________
Provide careful written and photo documentation
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Crime Scene Walkthrough - 2
During the scene walkthrough, the investigator(s) in charge should: _______________________________________ Prepare preliminary documentation of the scene Identify and protect _________________________ ___________________________________________________
________________________________________________________________________________________________________________________________________________
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General Crime Scene Investigation: Processing the Scene
The steps ___________________________________________ Control evidence contamination Document the scene ___________________________________________ Collect, preserve, inventory, package, ________________,
and submit evidence
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Completing and Recording the Crime Scene Investigation
The steps• ___________________________________________• Complete a scene debriefing • ___________________________________________• Document the crime scene
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Crime Scene Debriefing Team
Includes: ___________________________________________ Other investigators _______________________________________________________
___________________________________________________________________________________________________________________________________________________________________________________________________________
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Final Survey of the Crime Scene
• Each area identified as part of the crime scene is inspected
• ________________________________________________________________________
• The crime scene is released in accordance with jurisdictional requirements
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Document the Crime Scene- 1
The investigator(s) in charge must make sure that ___________________________________________________________________________________________ compiled into a case file
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Document the Crime Scene-2
The case file should be a record of actions taken and evidence collected at the scene
Documentation should allow for independent review of the work completed
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Collecting Evidence - 1
ImportantNo contamination______________________
______________________________________________
Documentation essential
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Collecting Evidence - 2
Types of evidenceBlood and liquidsFingerprints_________________Physical at sceneDocumentaryAll must be treated
with utmost care
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Summary
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References - 1
a) US Department of Homeland Security, Federal Law enforcement Center Training Workshop Website - http://www.fletc.gov/osl/tuition-free-training-programs/basic-criminal-investigations/
b)National Institute of Justice Website - http://nij.gov/topics/law-enforcement/investigations/crime-scene/guides/