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Unit 23 forensic evidence collection and analysis Assignment 2 $11.31
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  2.  
  3. PEARSON (PEARSON)
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  5. Applied Science 2016 NQF
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  7. Unit 23 forensic evidence collection and analysis

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Unit 23 forensic evidence collection and analysis Assignment 2
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  • Unit 23 forensic evidence collection and analysis
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  • PEARSON (PEARSON)

Received triple D*s in my applied science extended diploma all my assignments have been completed to the highest standard possible having been checked by several teachers ensuring the correct grade was given to me each of my assignments are plagiarism free and each assignment I've completed I've me...

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Document informatie

  • 8 november 2022
  • 8
  • 2022/2023
  • Overig
  • Onbekend

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  • applied science
  • unit 23
  • forensic evidence collection and analysis

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  • PEARSON (PEARSON)
  • Applied Science 2016 NQF
  • Unit 23 forensic evidence collection and analysis
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Voorbeeld van de inhoud

P2 Task 1 Outline the roles of crime scene and authorised personnel who
attend crime scenes.
With the crime scene a SOCO (scene of crime officer) which can also be called a crime scene
investigator their role is to process as well as to preserve a crime scene they have to follow
legislation this is due to the fact that the forensic evidence collected is valid and can be
presented in court with honesty. Moreover they have to correctly pick out documents,
package labels, and security evidence. (Forensics book)
With an authorised personnel its different because the first person that arrives at the scene
is known as the FAO (first attending officer) which is normally a police officer their task is
simple all it requires is for them to assess the scene and decide weather extra assistance will
be required moreover the FOA will search before hand for any suspects if they are nearby at
the crime scene as well as searching for any witnesses or injuries. (Forensics book)



P1 Task 2 Describe the procedures used to gather evidence for forensic
investigations
There are many procedures used in gathering evidence for forensic investigation one of
them being the restriction of the scene and restriction pf access this is where CSI/SOCO is
the first to arrive at the crime scene because there are a multiple number of safety and
security issues needing to be dealt with before any evidence can be collected and the scene
looked into there is limited access as to who can enter the crime scene this is because
anyone who enters the crime scene can accidentally contaminate or destroy evidence if not
cautious which is why access is controlled only the authorised personnel are granted access
to the crime scene only with a suitable CAP (common approach path) to protect and
preserve the crime scene. (Forensics book)
Observation and the recording of the scene a risk assessment is carried out by the CSI/SOCO
which is done to help identify safety and health worries to make sure their team and them
know the hazards as well as how to prevent any injuries. After the risk assessment is carried
out only the authorised people will be able to enter the scene and make a survey picking out
clear pieces of evidence and possible points of exit and entry which may have been used by
the offender the SOCO will preserve and protect any possible forensic evidence this is done
so that no damage or deterioration occurs example are a bin lid used to protect a footwear
impression in mud. (Forensics book)
Documentation and recovery of trace materials in this the SOCO has to record the crime
scene in it’s normal state before any evidence can be collected or moved there are various
methods for the documenting of the scene an example is note taking. Another procedure is
prevention of contamination its called the unwanted transfer of material this has to be kept
away at all times in the crime scene individuals are an example of who can contaminate the
evidence and scene at any time of the investigation. The unwanted transfer of material is
known to occur through two or multiple sources of evidence this is called cross
contamination. (Forensics book)

, Another procedure is marks and impressions where the criminals use tools to forcefully
enter premises leaving behind evidence such as footprints or hand impressions that forensic
scientists can later on find. Other ways of collecting evidence is shaking which is done to
recover trace evidence such as fibres, hairs, and glass fragments another method used is
brushing which is done to remove any trapped particles from surfaces such as pocket
linings, shoes, victims hair etc and the last method of collection is taping which is done to
help recover fingerprints hairs from clothing, and fibres.(Lib Guides: Forensic Science:
Marks and Impressions Author unknown, 2022)
Additionally when evidence is collected it needs to be packaged and labelled appropriate
packaging has to be used to protect and keep the item secure as well as preventing
contamination packaging come in different types at the CSI/SOCO but it depends on the size
and type of evidence including the safety and health hazards but the most common type
used is tamper which is a plastic bag with a unique evidence bag number imprinted on it the
bag has a seal made out of a sticky strip to seal it and shouldn’t be tampered with in any
way because the seal will distort to indicate this tampering. The CSIs/SOCO have access to
even more hard packaging such as weapon tubes to package sharp items preventing serious
injury e.g. syringes or knives. (Forensics book)
The storage and transport of evidence once it has been collected it has to be secured safely
and transferred to the forensic laboratory as well as the evidence store the SOCO sends the
evidence back to the forensic evidence store or police station and book the evidence this
will help in providing an audit trail and record each and every exhibit. Once that is done the
evidence is then sent ahead with the paperwork to the right forensic laboratory for the
analysis they usually do this using a trusted courier company or police personnel it is
important the storage of the evidence is kept secure all the time to prevent unapproved
personnel from tapering or removing the evidence. The continuity of evidence means each
and every piece of the evidence submitted to court will need to thorough and have
complete documentation recording the methods and procedures used to collect it as well as
keeping a log showing who kept the evidence at each and every stage of the criminal
investigation. (forensics book)



M2 Task 3 Explain the structure and importance of scientific support units
and authorised personnel to forensic investigators.
With the crime scene a SOCO (scene of crime officer) which can also be called a crime scene
investigator their role is to process as well as to preserve a crime scene they have to follow
legislation this is due to the fact that the forensic evidence collected is valid and can be
presented in court with honesty. Moreover they have to correctly pick out documents,
package labels, and security evidence. (Forensics book)
With an authorised personnel its different because the first person that arrives at the scene
is known as the FAO (first attending officer) which is normally a police officer their task is
simple all it requires is for them to assess the scene and decide whether extra assistance will

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