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Forensic evidence, collection and analysis

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Forensic science is any science used for the purposes of the law. Gathering information from the past and examining it to construct a sequence of events that may be presented in a court of law. In this unit, you will develop an understanding of the importance of health and safety, and the need for objectivity and justification in your approach to the identification, collection and analysis of forensic evidence. You will take part in a simulated crime scene investigation and be expected to demonstrate appropriate forensic techniques to process the scene, collecting biological, chemical and physical evidence. You will be required to document and package all evidence to provide a chain of continuity. A forensic scientist is not routinely present at a crime scene; they generally receive evidence in a laboratory for analysis. Evidence will be sent to specialist laboratories depending on the area of analysis needed. Forensic scientists use biological analysis such as blood grouping of blood swabs, microscopy of hairs and fibres, and DNA testing of bodily fluids. The use of chemical analysis may involve documents to enhance latent fingerprints or presumptive tests to test for firearms residue, for example. Finally, physical analysis may comprise of analysing documents to determine handwriting patterns or comparing footwear impressions. In this unit, you will develop scientific, analytical thinking through the use of biological, chemical and physical concepts and evidence in order to prove or disprove theories, develop a chronology and provide scientific justification for analysis and conclusions drawn from investigations. This requires you to practically explore the principles of science that form the basis of some of the analytical techniques commonly used, as well as to carry out analysis using specialised equipment. This unit outlines the practical approach to forensic investigation, allowing you to develop appropriate knowledge and skills. You will explore a variety of evidentiary principles, from collecting the evidence, through the analysis and, finally, to the presentation of your results in a variety of formats for use in the criminal justice system (CJS). A forensic scientist must also be able to present the results of their examination of evidence using a variety of methods – written, verbal and visual – and you will be given the opportunity to make your own presentations in an appropriate manner. This unit also provides an opportunity to learn more about some topical issues, such as advancement in forensic technology and professional certification following training

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Unit 23: Forensic evidence, collection and analysis




Name: Aishah’ Sofia Dirir Mahmoud



Teacher: Leah Carson



Assignment title: Investigating a stimulated crime scene



Learning aim B: Investigate a simulated crime scene using forensic procedures



Submission: First




Date: 01/06/2025

, Investigating a stimulated crime scene

Introduction

The police found the victim dead in his hotel room between 10:00pm and 7:30am. The victim
was discovered unresponsive by a cleaner who contacted authorities at 7:30 am. The First
officer attending (FOA) arrived at the crime scene at 8:05am to establish a secure area for
investigation. The crime scene photograph and sketch depict the victim lying on the floor
wearing casual clothing and a coat with a gun and shoes located near him but not on his body.
A bloody knife was discovered inside the inner jacket pocket while an apology note with the
words “I’m sorry” was found at the crime scene. The table near the victim contained multiple
objects including two bottles together with a wine glass and lipstick which indicated another
person might have been present before death occurred. The victim showed no external injuries
despite having accessible weapons and no blood stains were found on his body. The hotel
entrance and exit areas were the only sections of the building covered by CCTV cameras, but
the investigation lacked access to complete guest information. The discovery of blonde hair
with slight curls on the victim's body created additional questions about the identity of the
person who was in the room during the crucial time period.




Figure 1. photo and sketch depicting the crime scene

How access to the crime scene was restricted

The crime scene was restricted through the use of a cordon “CRIME SCENE- DO NOT ENTER”
tape which served as shown in the image below. The yellow tape created a physical boundary
to protect the main evidence area which contained the wine bottles and glass as well as the
body and other essential evidence found on the chair and floor. The areas remained restricted
to authorised forensic personnel who needed access for evidence collection and
documentation purposes.

Libro relacionado
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Frances Annets, Shirley Foale, Roy Llewellyn, Ismail Musa, Sue Hocking, BTEC Level 3 National Applied Science, Student Book
Editorial: november 2010 ISBN: 9781846906800 Edición: 3

Información del documento

Nivel de Estudio
Tema
Subido en
14 de junio de 2025
Número de páginas
12
Escrito en
2024/2025
Tipo
Ensayo
Profesor(es)
Desconocido
Grado
A+
$11.26

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