PGRD Course: Crime Scene Examination Report and Evidence Recovery

This report provides a detailed examination of a crime scene, focusing on the recovery and analysis of forensic evidence. The report begins with an introduction highlighting the importance of evidence preservation and the role of the Crime Scene Investigator (CSI). The body of the report outlines the tools used in forensic science, including mass spectrometers and microscopes. A summary of the crime scene observations is provided, including bloodstains, a potential murder weapon, and other relevant items. The report then recommends specific steps for evidence collection, such as analyzing blood samples and fingerprints. Finally, the report references key sources in forensic science and offers insights into the importance of meticulous crime scene investigation.

Running head: Crime scene Examination
CRIME SCENE EXAMINATION

Crime scene Examination 1
Table of Contents
Introduction.................................................................................................................................................2
Tools used for Investigation........................................................................................................................3
Summary of the crime Scene Viewed..........................................................................................................4
Recommendations.......................................................................................................................................4
References...................................................................................................................................................5

Crime scene Examination 2
Introduction
The examination of a crime scene is about the accumulation of physical proof in a way that
safeguards the proof in the condition in which it was found. It doesn't make a difference whether
the evidence is factual or representative, for example, a weapon, a follow material, a hair, an
organ a blood smear, or even the body of an expired individual, the point is dependable to ensure
and protect the proof for recuperation with the goal that it very well may be forensically
inspected at some later time(Saks, 2010). As a rule the proof is at first not unmistakable to the
bare eye and such proof, regardless of whether an imperceptible (inert) fingerprint or footwear
check or another stamp should initially be "dealt with" with substances to make it noticeable so it
very well may be recouped; it is particularly critical that this sort of proof isn't harmed in
endeavors to make it obvious for recuperation. Recognize that the CSI isn't requested to answer
the inquiry whodunit? They have not requested to state whether a blamed individual was the
individual who carried out the crime. That is the activity of the direction for the arraignment if
and when the case goes to court. The job of the CSI is to gather proof and to do as such in a way
which amplifies its recuperation at the scene of the crime. To guarantee that the recuperation of
proof is augmented, the CSI must not just process the crime scene in a precise and deliberate
way, they should likewise recoup proof cautiously, bundle each thing so that it won't be harmed
or influenced by transport far from the scene and away, separately name each thing, so each is
extraordinarily recognizable, and precisely record each part of the examination (Robertson,
Roux, & Wiggins, 2017). There is just a single chance to gather the proof, and it must be done
legitimately and first time. There is normally no additional opportunity, and when the proof has
gone, it's gone for good.
A photographic record of the scene will in a perfect world incorporate pictures of the scene from
different areas, for example, from the four corners of a room looking towards the center of the
room. It is a rarity indeed conceivable to do this until after the scene has been analyzed
systematically. However, the CSI will catch these and other far-reaching sees. Further
photographic records will at that point be made of little parts of the scene, catching the overall
places of things of proof that will later be gathered. At last, close-up pictures of individual things
of proof will be recorded, much of the time with and without a scale rule. A tripod to help settle

Crime scene Examination 3
and "casing" the shot is constantly utilized, and the off-camera streak is habitually required as
well. The photography of things will frequently happen at the time they are gathered.
Locard's Law reveals to us that "each contact leaves a follow." Let's consider this in somewhat
more detail. At the point when a proof is saved at the scene by the individual who completed the
crime, a ONE-WAY exchange has happened. A unique mark left by the culprit is a case of a one-
way exchange, and it can connect the individual who did the crime to the crime scene. Be that as
it may, recollect, the individual who does the crime may not just desert bits of themselves at the
scene, they may likewise remove follow materials from the scene on themselves and their
garments (Taroni, Bozza, Biedermann, Garbolino, & Aitken, 2010). On the off chance that the
individual who left his unique mark likewise broke a window to pick up the passage to the
property, little particles of glass will have been exchanged to and will stay on his garments long
after the crime occurred. Forensic researchers call this a TWO-WAY exchange, and such
exchange of proof gives a lot more grounded evidential help setting the suspect at the scene of
the crime(Zbieć-Piekarska et al., 2015). Though hints of proof must be recuperated from the
individual who has completed the crime after they have been captured, the CSI will recoup
physical proof from the scene they have visited. The CSI will recoup each unique kind of proof
utilizing a technique that keeps the things from getting to be tainted or harmed. Hairs and
filaments, for instance, might be recouped either by utilizing a couple of tweezers (if the strands
are effortlessly unmistakable) or by utilizing delicate glue sticky tape in what is known as a
fiber-lift. Inert fingerprints will initially be uncovered by tidying them with one of a scope of
powders and brushes, captured, and after that "lifted" far from the surface again utilizing a
delicate glue sticky tape. As stated by Spradley & Jantz (2011) footwear imprints might be
recouped utilizing an electrostatic strategy (called ESLA) which can uncover even just hints of
residue stored by a shoe on a story or entryway surface. Regularly, unique kinds of bundling can
be utilized for the assurance of a similar sort of proof - there isn't, in reality, any extremely rigid
principle(Dror, 2015). The imperative point is that the CSI must utilize the best (the most fitting)
strategy the individual in question thinks for recuperating the proof to expand its esteem when it
is later analyzed in a forensic research facility. What's more, if all else fails, they will ask an
increasingly senior and experienced CSI for exhortation.

Crime scene Examination 4
Tools used for Investigation
The primary tools used by forensic scientists:
 Mass Spectrometers
 Powerful Microscopes
 Chromatographs
Summary of the crime Scene Viewed
On the given incident the entire crime scene was filled with forensic materials. The following are
the primary observations of the crime scene:
 Upon entering the house, bloodstains could be noticed on the floor. The blood stains
could primarily belong to the victim, but further investigation is required to ascertain that
the blood samples belong to the victim only and not to any other individual.
 Upon further investigation blood stains on the carpet can be found along with blood
stains on the kitchen sink.
 In the sink, the perpetrator unsuccessfully tried to wash off the blood and left behind
bloodstained cleaning rags which can be tested in the lab for fingerprints.
 It seemed from the scene that a scuffle broke out between the perpetrator and the victim
which resulted in the broken furniture’s.
 The probable murder weapon was found in a drawer nearby with blood stains; it should
be collected and tested for fingerprints.
 On the table, drugs were found which could have been the motive behind the crime.
 Along with this two economy class plane tickets were found which could be used to pin
down the identity of the perpetrator.
Recommendations
 After going through the entire crime scene, I can recommend the following steps:
 Collection of blood samples to check that they belong to the same person.
 Analyze the cleaning rags and the knife for fingerprints.
 Investigate the plane tickets and bring the individuals for questioning and a probable
blood and fingerprint test.

Crime scene Examination 5
References
Dror, I. E. (2015). Cognitive neuroscience in forensic science: understanding and utilizing the
human element. Philosophical Transactions of the Royal Society B: Biological
Sciences, 370(1674).
Robertson, J., Roux, C., & Wiggins, K. G. (2017). The forensic examination of fibers. CRC
press.
Saks, M. J. (2010). Forensic identification: from a faith-based “Science” to a scientific
science. Forensic science international, 201(1-3), 14-17.
Spradley, M. K., & Jantz, R. L. (2011). Sex estimation in forensic anthropology: skull versus
postcranial elements. Journal of Forensic Sciences, 56(2), 289-296.
Taroni, F., Bozza, S., Biedermann, A., Garbolino, P., & Aitken, C. (2010). Data analysis in
forensic science: a Bayesian decision perspective (Vol. 88). John Wiley & Sons.
Zbieć-Piekarska, R., Spólnicka, M., Kupiec, T., Makowska, Ż., Spas, A., Parys-Proszek, A., ...
&Branicki, W. (2015). Examination of the DNA methylation status of the ELOVL2
marker may be useful for human age prediction in forensic science. Forensic Science
International: Genetics, 14, 161-167.