This exploratory research is the first one among occupational information seeking behavior studies that focuses on information seeking behaviors of the crime scene investigators. The data used in this dissertation were gathered via a self-administrated survey instrument from 29 cities in Turkey. Findings obtained from the data analyses show that there is a strongly positive relationship between the experience of the crime scene investigators and the use of personal knowledge and experience as a primary information source (experience is operationalized with age, service years in policing, and service years in crime scene investigation units). The findings also suggest that increasing of the level of education is negatively related to relying on immediate colleagues as an information source among the crime scene investigators. These findings are consistent with related literature and theory. The data analysis shows that crime scene investigators work in cities with higher population rates have more complaint scores than those who work in cities with lower population rates across Turkey. The findings from the data analysis may suggest valuable implications to defeat the barriers between crime scene investigators and information sources. The researcher drew a proposed theoretical framework of an information behavior concept in the context of crime scene investigation that may help those who are interested in the phenomenon and its applications to other contexts.

The process of investigation, which begins when a crime is reported and ends after a suspect has been convicted or discharged by a court of law, is a mammoth task which requires cooperation between various stakeholders, such as investigators and prosecutors. The purpose of this study was to determine the role of the specialised commercial crime investigators in the prosecution process. The study evaluated and explored the status of the current roles played by these investigators with the intention of recommending changes that could improve investigator practice. Two research questions were posed. First, the researcher endeavoured to find answers to a question regarding what the prosecution process entails. Secondly, the researcher sought to establish the roles of the specialised commercial crime investigator in the prosecution process. It was envisaged that the answers to these questions could be obtained from specialised commercial crime investigators and prosecutors deployed in the commercial crimes courts. On this basis two samples were chosen, with nine investigators from the Gauteng North office of the Specialised Commercial Crimes Unit and four prosecutors from the Specialised Commercial Crimes Court in Gauteng North. Some of the findings were that the investigators in trying to fulfil their roles of investigations have an adverse impact on the investigation and successful prosecution of offenders, which in turn lead to recidivism and apathy among the communities being served by the police and the justice system in general. The image of the police, particularly that of the commercial crime investigators, is often negated and the justice system is portrayed as a failure in addressing the problem of crime. The conclusions drawn from the data were that the roles of investigators in the prosecution process are mandatory as they are legislated rather that persuasive and that investigators cannot rely on prosecutors to handle all aspects of investigation once a case has been handed over to the prosecution. Apart from a lack of knowledge about these roles, it was established that some investigators deliberately ignore their roles in this relationship. It is proposed that dedicated training should be afforded to investigators and prosecutors above their existing training, with a focus on how to take part in the prosecution process. Investigators should be informed that their responsibilities in the prosecution process are a result of legislation and that failure to satisfy the legislation will carry adverse consequences for the investigation itself, the prosecution and the other stakeholders. / Criminal and Procedural Law / M.Tech. (Forensic Investigations)

Clandestine burials, the interred human remains of forensic interest, are generally small features located in isolated environments. Typical ground searches can be both time-consuming and dangerous. Thermal remote sensing has been recognized for some time as a possible search strategy for such burials that are in relatively open areas; however, there is a paucity of published research with respect to this application. This project involved image manipulation, the analyses of signatures for "graves" of various depths when compared to an undisturbed background, and the use of image classification techniques to tease out these features. This research demonstrates a relationship between the depth of burial disturbance and the resultant signature. Further, image classification techniques, especially object-oriented algorithms, can be successfully applied to single band thermal imagery. These findings may ultimately decrease burial search times for law enforcement and increase the likelihood of locating clandestine graves.

Policing is more difficult than ever before in today’s world since types of crime and criminal profiles change as a result of technological development and globalization. Police organizations should review their organizational and operational strategies to improve the fight against contemporary crimes and criminals. Behaviors and performance of police officers are very important in fighting crime. In this struggle, especially today, officers should exhibit organizational citizenship behaviors and perform better. One of the most important factors affecting these two concepts in organizations is organizational support. The literature stresses the social exchange cycle and reciprocity rules in the relationships of organizations and their members. In this cycle, if the organization cares about its members and if members perceive that the organization is supportive, they feel obliged to behave positively, perform better, and help the organization to reach its goals and objectives. If they don’t perceive organizational support, they won’t care about the organization, either. Hypotheses were developed based on these assumptions in the literature. This study tested these assumptions in Crime Scene Investigation units of the Turkish National Police (TNP). Structural Equation Modeling (SEM) was used to analyze the relationships among variables of Perceived Organizational Support (POS), Organizational Citizenship Behavior (OCB), and Perceived Performance (PP). Measurement models for these three latent constructs were developed by deriving the indicators from the literature. Most earlier studies tried to figure out reasons of the OCB. This study has a different perspective that investigates both reasons and results of OCB. A survey was developed to measure the latent variables of the study, and 405 of approximately 3,000 Crime Scene Investigators in the Turkish National Police responded to the iv survey. Results of the study showed that the relationship between POS and OCB is positive and significant. This is consistent with the literature. The relationship between OCB and PP is also positive and significant, and this is also consistent with the literature. However, the relationship between POS and PP is negative and insignificant. This result contradicts the results of previous studies in the literature and can be attributed to the subjective nature of measuring individuals’ perceptions. According to the literature, perceptions are subjective rather than objective; therefore, data coming from reports of individual perceptions may not reflect the actual situation. Demographic information of the participants served as the control variables of the study. Information about the education level, rank, age, gender, size of the unit, and tenure of the respondents was collected by way of the conducted survey, and the effects of these variables were analyzed on the endogenous variable of the study, Perceived Performance. This study found no significant relationships between these control variables and Perceived Performance. Therefore, all these control variables were removed from the Structural Equation Model of the study. This study revealed that the TNP needs to be more supportive toward its members in order to have officers show organizational citizenship behavior and perform better. The TNP should revise its policies, especially regarding rotations from one province to another, working hours, rewards, and overtime pay. These are all indicators of organizational support and will result in a higher performance level among officers.

In this study the main focus of the researcher was to analyse a cheque to identify crime. This study intends to give the forensic investigator a guideline to follow during the analysis of a cheque under investigation. Crimes that could be detected during the analysis of a cheque are fraud, forgery and uttering. Other aspects were also explained to ensure a better understanding of the study, namely: forensic investigation, forensic investigator, identification and crime scenes. Forensic investigation is a systematic search for the truth with the primary purpose of finding a positive solution to a crime. Forensic investigation is not a game of chance, or based on storybook types of coincidences. Therefore, forensic investigators cannot rely on coincidental success to come their way. It is true that luck sometimes plays a role in forensic investigations, but it is the thorough investigator who creates his/her own opportunities and arrives at the right place at the right time. In order for a forensic investigator to strive for excellence, he/she must have a good knowledge of his/her field of work. It is important for the forensic investigator to understand that identification plays an important role in forensic investigation. An additional benefit is derived when one can individualise something because it makes the identification much more valuable. All crime scenes should furthermore be managed in such a way that all physical evidence can be collected in order to ensure successful prosecution and conviction in a court of law. It is the belief of the researcher that because cheques are not acknowledged as crime scenes and therefore not properly handled or protected, many investigations fail in court and the accused are acquitted. / Criminology / M. Tech. (Forensic Investigation)

My goal in this research was to develop a checklist for examining a cheque for information that can be used to identify, individualise and trace the perpetrator of a crime. A further intent was to share and introduce a number of important concepts, namely forensic investigation, identification, individualisation, the Locard principle and crime scene. This research will explain that forensic investigation refers to the using of sophisticated investigation techniques to obtain sufficient information to prove the true facts in a court of law. Further, that identification is the collective aspect of the set of characteristics by which an object is definitively recognisable or known, while the individual characteristics establish the individuality of a specific object. To link an individual with a crime scene, many types of evidence may be used and to associate an individual with the performed illegal handling, many types of evidence may be used. These types of evidence are commonly referred to as ”transfer” evidence. This process is also referred to as the ”Locard principle”. Lastly, a crime scene is explained as a place where a crime has occurred. It is also explained to be a ”laboratory of information” and therefore, during a cheque fraud investigation, the cheque is in most cases the only link to information to trace, identify and individualise the perpetrator. Therefore, the cheque should be treated as a crime scene. If forensic investigators use their knowledge of these concepts together with the checklist, it should enhance their investigation skills and empower them to become better equipped for the challenges they face in identifying, individualising and tracing the perpetrators in order to ensure successful prosecution and conviction. I believe all forensic investigators will benefit from what I have discovered through this research and I am very pleased to be able to introduce this checklist to you. / Criminology / M.Tech. (Forensic Investigation)

The study was conducted with the intention of identifying the current procedure employed by investigators for processing firearms evidence at a crime scene. The researcher identified shortcomings which prevent firearm evidence being found to be inadmissible in criminal proceedings. The researcher also analysed other aspects relating to the processing of firearm evidence at a crime scene, namely: Locard principle, identification, individualisation and physical integrity. In order for investigators to be successful in their investigation of cases involving firearms, it is imperative for investigators to have a clear understanding of the basic concepts surrounding firearm evidence processing. It is the strong belief of the researcher that because of improper handling, contamination and lack of integrity pertaining to firearm evidence, such evidence is being found to be inadmissible in criminal proceedings. This negative impact has a roll over effect on the conviction rate for serious crime. / Criminology / M. Tech. (Forensic Invesigation)

The purpose of the research was to establish action steps than can assist the criminal investigator in the processing of information into evidence for prosecution purposes, by focusing on the basic principles of criminal investigation from where information sources could be utilised to their full potential in the search for the truth. The researcher evaluated the current methods that investigators within the SAPS use and read extensively on the topic in international literature sources. The research used an empirical research design because of the limited information available, and a qualitative research approach which enabled real-life observations. Simple random sampling was used to interview 30 experienced investigators each with more than five years experience and purposive sampling was used to identify five expert respondents who had more than 30 years' investigation experience. Data was obtained from their real-life experiences and data was further collected through case studies of case dockets. / Criminology / M.Tech. (Forensic investigation)

The problem encountered by the researcher was that the South African Police Service Cyber-Crimes Unit is experiencing problems in seizing computer evidence. The following problems were identified by the researcher in practice: evidence is destroyed or lost because of mishandling by investigators; computer evidence is often not obtained or recognised, due to a lack of knowledge and skills on the part of investigators to properly seize computer evidence; difficulties to establish authenticity and initiate a chain of custody for the seized evidence; current training that is offered is unable to cover critical steps in the performance of seizing computer evidence; computer seizure as a technique requires specialised knowledge and continuous training, because the information technology industry is an ever-changing area. An empirical research design, followed by a qualitative research approach, allowed the researcher to also obtain information from practice. A thorough literature study, complemented by interviews, was done to collect the required data for the research. Members of the South African Police Cyber-crime Unit and prosecutors dealing with cyber-crime cases were interviewed to obtain their input into, and experiences on, the topic. The aim of the study was to explore the role of computers in the forensic investigation process, and to determine how computers can be seized without compromising evidence. The study therefore also aimed at creating an understanding and awareness about the slippery nature of computer evidence, and how it can find its way to the court of law without being compromised. The research has revealed that computer crime is different from common law or traditional crimes. It is complicated, and therefore only skilled and qualified forensic experts should be used to seize computer evidence, to ensure that the evidence is not compromised. Training of cyber-crime technicians has to be priority, in order to be successful in seizing computers. / Department of Criminology / M.Tech. (Forensic Investigation)

The study was conducted with the intention of identifying the current procedure employed by investigators for processing firearms evidence at a crime scene. The researcher identified shortcomings which prevent firearm evidence being found to be inadmissible in criminal proceedings. The researcher also analysed other aspects relating to the processing of firearm evidence at a crime scene, namely: Locard principle, identification, individualisation and physical integrity. In order for investigators to be successful in their investigation of cases involving firearms, it is imperative for investigators to have a clear understanding of the basic concepts surrounding firearm evidence processing. It is the strong belief of the researcher that because of improper handling, contamination and lack of integrity pertaining to firearm evidence, such evidence is being found to be inadmissible in criminal proceedings. This negative impact has a roll over effect on the conviction rate for serious crime. / Criminology and Security Science / M. Tech. (Forensic Invesigation)