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Unit 23 Assignment A
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this assignment gives a in-depth description of what forensics' science is and what it does.
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Gathering andPreserving forensic
Evidence
UNIT 23 ASSIGNMENT ATHIS
Forensic Evidence, Collection and Analysis
,Table of Contents
Describe the procedures used to gather evidence for forensics investigations. P1...............................2
Justify the importance of the procedures used to gather evidence for forensic investigations. M1.....2
What is a forensic investigation?.......................................................................................................2
How are crime scenes investigated?..................................................................................................2
The samples that might be taken at a crime scene........................................................................2
How to conduct a crime scene investigation.....................................................................................3
Determine the size of the scene and note any possible risks to health and safety........................3
Establish security...........................................................................................................................4
Plan, communicate and coordinate...............................................................................................4
Conduct a primary and secondary survey......................................................................................5
Document and process the scene................................................................................................11
Record and preserve evidence.....................................................................................................12
Outline the roles of crime scene and authorised personnel who attend crime scenes. P2.................12
Explain the structure and importance of Scientific Support Units and authorised personnel to
forensic investigations. M2..................................................................................................................13
Who investigates crime scenes?......................................................................................................13
Crime scene personnel................................................................................................................14
Authorised personnel at the scene..............................................................................................15
Discuss the importance of documentation methods to forensic investigations and analyse each
personnel used to gather evidence in relation to health and safety and to preserve the integrity of
evidence. D1........................................................................................................................................17
Health and safety.............................................................................................................................17
Documentation of evidence.............................................................................................................18
Protecting the evidence...............................................................................................................19
Route of evidence from crime scene to court (SOCO, SSU, forensic laboratory, court)...............19
Bibliography.........................................................................................................................................21
2
, Describe the procedures used to gather evidence for
forensics investigations. P1
Justify the importance of the procedures used to gather
evidence for forensic investigations. M1
What is a forensic investigation?
This kind of investigation uses the scientific approach or another skill,
such as accounting or valuation knowledge, and looks backward to reach
a decision about something that happened in the past.[1] Photographs are
used by investigators to record crime scenes. To document the event,
they capture measurements and take images. They also gather forensic
evidence and uphold the correct chain of custody for that evidence. The
evidence that detectives gather at crime scenes includes fingerprints, tyre
prints, hairs, fibres, blood, and other bodily fluids.[2]
How are crime scenes investigated?
The samples that might be taken at a crime scene
A variety of objects could be considered essential physical evidence for
gathering and investigation:[3]
Biological evidence (hair, blood, saliva…)
Latent print (footprint, palm print, fingerprints…)
Tool and tool mark
Firearm
Digital evidence (cell phone records, email messages, internet
logs…)
Footwear and tire track
Drugs
Trace evidence (soil, glass fragments, fibres…)
2
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