Project – Effect of Forensic Accounting Practices on Fraud Detection and Prevention in Selected Commercial Banks in Lagos State

CHAPTER ONE

INTRODUCTION

1.1 Background to the Study

The banking sector occupies a strategic position in every modern economy because it mobilizes savings, facilitates payments, provides credit, supports investment and contributes to economic development. However, the effectiveness of banking institutions can be undermined by fraudulent activities perpetrated by employees, customers, management, external collaborators and cybercriminals. Fraud in banking may involve unauthorized withdrawals, falsification of records, manipulation of financial statements, identity theft, cyber-related transactions, insider abuse, fraudulent loans and other forms of financial misconduct. The complexity of contemporary banking transactions has made it increasingly difficult for conventional control and auditing mechanisms alone to identify sophisticated fraudulent activities. Consequently, forensic accounting has emerged as an important investigative and analytical approach for identifying irregularities, tracing financial transactions and providing evidence that can support fraud detection, prevention and litigation. Okoye (2009) explains that forensic accounting combines accounting expertise with investigative and legal knowledge and is particularly relevant where financial information may be required for dispute resolution or litigation.

Forensic accounting involves the application of accounting, auditing, investigative, analytical and legal skills to financial information for the purpose of establishing facts, identifying irregularities and providing evidence that can withstand scrutiny. Unlike traditional accounting, which primarily focuses on recording, reporting and presenting financial transactions, forensic accounting places greater emphasis on investigation, analysis and the identification of unusual financial activities. Forensic accountants may examine accounting records, analyze transaction patterns, trace funds, investigate suspicious activities, interview relevant persons and prepare reports that can support legal proceedings. Okoye (2009) notes that forensic accounting is concerned with fact-finding and interpretation and has become increasingly important because of the growth of fraudulent activities. Similarly, Ewa, Adebisi and Eseneyen (2020) describe forensic accounting techniques as useful tools for examining fraudulent practices in the banking sector and specifically identify commercial data mining, ratio analysis and trend analysis as techniques capable of enhancing fraud detection and prevention.

Fraud detection is one of the major areas in which forensic accounting practices can contribute to the protection of commercial banks. Fraud detection involves identifying suspicious transactions, irregular financial patterns and activities that may indicate fraudulent conduct. Forensic accounting techniques such as data mining, ratio analysis, trend analysis, financial statement analysis and investigative examination can assist professionals in identifying abnormalities that may not be easily detected through conventional audit procedures. Ewa et al. (2020), in their evaluation of forensic accounting techniques in Nigeria’s banking sector, found that commercial data mining, ratio analysis and trend analysis significantly enhanced the detection and prevention of fraud. Their findings further indicated that data-mining technology could assist banks in identifying suspicious patterns, although inadequate knowledge and capacity among staff represented an important challenge to its effective application.

Fraud prevention represents another important dimension of forensic accounting because the objective of an effective anti-fraud system should not only be to discover fraudulent transactions after they have occurred but also to reduce the opportunity and likelihood of future fraud. Forensic accounting can contribute to prevention through continuous examination of transactions, fraud-risk assessment, investigation of suspicious activities, strengthening of internal controls and the development of evidence-based anti-fraud mechanisms. Ogundana, Okere, Ogunleye and Oladapo (2018) found that forensic accounting had a significant impact on fraud prevention and detection in the Nigerian banking industry, although they also identified a relatively low level of awareness of forensic accounting within the industry. More recent evidence from Onyema, Ojo-Agbodu and Adebayo (2024) similarly indicates that forensic accounting has positive and significant effects on fraud prevention, fraud detection and fraud reduction among selected deposit money banks in Nigeria.

The effectiveness of forensic accounting also depends on the skills and techniques employed by forensic accounting professionals. These include forensic investigation, interrogation, risk assessment, legal compliance analysis, data-driven examination, transaction analysis and the use of specialized technological tools. The increasing digitization of banking has created large volumes of electronic transaction data, making technological competence particularly important in the identification of fraudulent activities. Ajibola and Mlanga (2025) examined forensic accounting techniques among listed commercial banks in Nigeria and reported that interrogation skills, risk assessment, legal compliance focus, fraud-specific investigation and data-driven analysis significantly enhanced fraud detection. Their findings demonstrate that forensic accounting is increasingly dependent on a combination of professional investigative skills and technology-based analytical capabilities rather than conventional examination of accounting records alone.

The Nigerian banking environment provides a particularly important context for examining forensic accounting because commercial banks process large volumes of financial transactions and are exposed to various forms of financial and cyber-related risks. Fraudulent activities can result in direct financial losses, reputational damage, regulatory sanctions, loss of customer confidence and additional costs associated with investigation and recovery. The problem is further complicated by insider involvement, sophisticated technology and the ability of fraudsters to exploit weaknesses in banking systems. Adebayo, Ogunleye and Fanimokun (2025) examined listed deposit money banks in Nigeria using data from 2015 to 2024 and found that forensic detection and prevention techniques had a significant positive effect on financial reporting quality, while engagement of forensic accountants also had a significant positive effect. Their findings suggest that forensic accounting practices can contribute not only to fraud detection and prevention but also to the reliability and integrity of financial information.

The importance of forensic accounting is particularly relevant to commercial banks operating in Lagos State because Lagos remains a major financial and commercial centre in Nigeria and accommodates the operations of numerous banking institutions and financial organizations. The concentration of banking activities and financial transactions creates both opportunities for economic activity and exposure to sophisticated forms of financial crime. Recent empirical evidence directly relating to Lagos State has shown the relevance of forensic auditing to fraud detection. Odedina and Oyewumi (2026), in a study focusing on selected commercial banks in Lagos State, examined litigation support services, arbitration, investigative accounting and technological integration and reported a significant positive relationship between forensic auditing practices and perceived fraud-detection effectiveness. This provides recent location-specific evidence supporting the relevance of forensic accounting practices to fraud detection among commercial banks operating in Lagos State.

Despite the increasing adoption of digital banking systems, internal controls, conventional auditing procedures and regulatory requirements, fraudulent activities remain a continuing concern within the Nigerian banking sector. This suggests that banks may need to strengthen their capacity to detect and prevent fraud through specialized accounting and investigative techniques. Kankpang, Ogar-Abang and Animpuye (2024) found significant relationships between forensic accounting functions, including litigation support, crime investigation, documentation and reporting, and fraud prevention in Nigerian commercial banks. Similarly, Esonwune and Ogiri (2023) reported that forensic investigation and litigation-related forensic services were relevant to fraud prevention among selected Nigerian banks, although the findings also indicated that not every forensic accounting dimension necessarily produces the same outcome. These findings demonstrate the importance of examining specific forensic accounting practices rather than assuming that all forensic activities have identical effects on fraud detection and prevention.

Another important consideration is the need to distinguish forensic accounting from traditional internal and external auditing. Conventional auditing provides reasonable assurance concerning the fairness of financial statements and compliance with applicable accounting standards, while forensic accounting is more investigative and evidence-oriented. Forensic accounting may become particularly valuable where there are indications of intentional manipulation, concealment, financial misconduct or litigation. Asaolu (2022) found that forensic accounting tools were effective in managing corporate fraud and reducing fraud incidence in the banking environment, emphasizing the usefulness of specialized forensic techniques in uncovering layers of financial irregularities. The complementary relationship between auditing, internal control and forensic accounting therefore suggests that commercial banks may benefit from integrating forensic capabilities into their broader risk-management and fraud-control systems.

The increasing sophistication of financial fraud also creates challenges for the effective application of forensic accounting practices. Banks require qualified personnel who possess accounting knowledge, investigative competence, technological skills and an understanding of relevant legal and regulatory requirements. They also require appropriate software and analytical systems capable of processing large volumes of transaction data. Ewa et al. (2020) identified inadequate capacity and awareness of data-mining technology among banking personnel as a challenge to the effective application of forensic accounting techniques. Similarly, Onyema et al. (2024) recommended investment in updated technology and the development of dedicated forensic capabilities within Nigerian banks. These findings indicate that the mere availability of forensic accounting techniques does not guarantee effective fraud control unless organizations also provide the necessary expertise, technology and institutional support.

The relationship between forensic accounting practices and fraud detection and prevention is therefore an important area of empirical investigation. Existing Nigerian studies generally suggest that forensic accounting contributes positively to fraud management, but differences exist in the specific techniques examined, the populations studied, research methods adopted and geographical contexts covered. For example, Ewa et al. (2020) concentrated on data mining, ratio analysis and trend analysis; Onyema et al. (2024) examined the broader effect of forensic accounting on fraud management among selected deposit money banks; while Odedina and Oyewumi (2026) focused specifically on commercial banks in Lagos State and examined litigation support, arbitration, investigative accounting and technological integration. These variations indicate the need for continued research that brings together relevant dimensions of forensic accounting practices and examines their combined effect on fraud detection and prevention within selected commercial banks in Lagos State.

Against this background, this study focuses on the effect of forensic accounting practices on fraud detection and prevention in selected commercial banks in Lagos State. The study will examine forensic investigation, data analytics, fraud-risk assessment and litigation support as major dimensions of forensic accounting practices, while fraud detection and prevention will constitute the dependent variable. The study is intended to establish whether the application of these forensic accounting practices can significantly improve the ability of commercial banks to identify fraudulent activities and reduce their occurrence. The findings may provide useful empirical evidence for bank management, accountants, auditors, regulators and other stakeholders concerned with strengthening the integrity and security of Nigeria’s banking system.

1.2 Statement of the Problem

Fraud remains a major challenge to the stability, profitability and reputation of commercial banks because fraudulent activities can result in direct financial losses, legal consequences, reputational damage and erosion of customer confidence. The increasingly digital nature of banking transactions has also expanded the opportunities available to fraudsters, who can exploit technological and organizational weaknesses to carry out sophisticated forms of financial crime. Although commercial banks have established internal controls, audit functions and regulatory compliance mechanisms, fraudulent activities continue to occur, raising questions about the adequacy of existing fraud detection and prevention mechanisms. Ewa et al. (2020) observed that the Nigerian banking sector continues to require effective techniques for preventing and detecting fraud and found that forensic accounting techniques could significantly enhance fraud control.

A major problem is that conventional accounting and auditing procedures may not always be sufficient to identify sophisticated fraudulent transactions, particularly where fraud involves deliberate concealment, collusion, manipulation of electronic records or complex transaction patterns. Fraudsters may exploit gaps in internal controls and use technological tools to disguise fraudulent activities. Where banks lack specialized forensic skills and appropriate analytical technology, suspicious transactions may not be detected promptly, thereby increasing potential losses. Ajibola and Mlanga (2025) found that forensic investigation, risk assessment, interrogation, legal compliance and data-driven analysis significantly enhanced fraud detection among listed commercial banks in Nigeria, suggesting that specialized forensic capabilities may provide additional protection beyond traditional control mechanisms.

Another problem concerns the inadequate integration of forensic accounting practices into the broader fraud-management systems of some commercial banks. Forensic accounting may be recognized as an important anti-fraud mechanism, but limitations involving inadequate specialist personnel, insufficient technological infrastructure, high implementation costs, limited staff awareness and weak institutional support may reduce its effectiveness. Ewa et al. (2020) identified inadequate capacity and awareness regarding data-mining technology as important challenges, while Ogundana et al. (2018) reported low awareness of forensic accounting within the Nigerian banking industry. These challenges may reduce the ability of banks to fully utilize forensic investigation, data analytics and other specialized techniques for identifying and preventing fraudulent activities.

Furthermore, although several studies have reported a positive relationship between forensic accounting and fraud management, there remains a need for more location-specific empirical evidence concerning commercial banks in Lagos State. Previous Nigerian studies have been conducted across different geographical areas and have examined different dimensions of forensic accounting. Onyema et al. (2024) found that forensic accounting significantly influenced fraud prevention, detection and reduction among selected Nigerian deposit money banks, while Odedina and Oyewumi (2026) provided more recent evidence from selected commercial banks in Lagos State. However, the continuing evolution of banking technology and fraud techniques makes it necessary to further examine whether forensic investigation, data analytics, fraud-risk assessment and litigation support collectively contribute to effective fraud detection and prevention in selected commercial banks in Lagos State.

It is against these identified problems that this study seeks to examine the effect of forensic accounting practices on fraud detection and prevention in selected commercial banks in Lagos State. Specifically, the study will determine the effects of forensic investigation, data analytics, fraud-risk assessment and litigation support on fraud detection and prevention. The study is expected to provide empirical evidence that may assist commercial banks in strengthening their forensic accounting capabilities and developing more effective approaches to identifying, investigating and preventing fraudulent activities.

1.3 Objectives of the Study

The main objective of this study is to examine the effect of forensic accounting practices on fraud detection and prevention in selected commercial banks in Lagos State.

The specific objectives are to:

1. determine the effect of forensic investigation on fraud detection and prevention in selected commercial banks in Lagos State;
2. examine the effect of data analytics on fraud detection and prevention in selected commercial banks in Lagos State;
3. assess the effect of fraud-risk assessment on fraud detection and prevention in selected commercial banks in Lagos State; and
4. determine the effect of litigation support on fraud detection and prevention in selected commercial banks in Lagos State.

1.4 Research Questions

The following research questions will guide the study:

1. What effect does forensic investigation have on fraud detection and prevention in selected commercial banks in Lagos State?
2. What effect does data analytics have on fraud detection and prevention in selected commercial banks in Lagos State?
3. What effect does fraud-risk assessment have on fraud detection and prevention in selected commercial banks in Lagos State?
4. What effect does litigation support have on fraud detection and prevention in selected commercial banks in Lagos State?

1.5 Research Hypothesis

The following null hypothesis will be tested at the 0.05 level of significance:

H₀: Forensic accounting practices have no significant effect on fraud detection and prevention in selected commercial banks in Lagos State.

1.6 Significance of the Study

The study will be significant to the management of commercial banks because it will provide empirical information on the effectiveness of forensic accounting practices in detecting and preventing fraudulent activities. The findings may help bank managers determine which forensic practices require greater attention, investment and institutional support. The study may also assist management in strengthening anti-fraud policies and integrating forensic accounting more effectively into existing internal control and risk-management systems.

The study will be useful to forensic accountants, internal auditors and external auditors because it will provide evidence concerning the practical contribution of forensic investigation, data analytics, fraud-risk assessment and litigation support to fraud management. The findings may encourage accounting professionals to develop specialized skills in financial investigation, digital analysis, fraud examination and evidence presentation.

The study will also be beneficial to regulatory institutions, including the Central Bank of Nigeria and other agencies responsible for maintaining the integrity of the Nigerian financial system. The findings may provide additional empirical evidence for strengthening regulatory guidelines concerning fraud prevention, forensic investigation, internal control and financial reporting within commercial banks.

The study will be relevant to customers and other stakeholders of commercial banks because effective fraud detection and prevention can contribute to greater protection of customers’ funds, improved confidence in banking institutions and enhanced financial-system integrity. Reduced fraud incidence may also help minimize financial losses that can ultimately affect customers and other stakeholders.

Finally, the study will contribute to academic knowledge and future research by providing additional evidence concerning forensic accounting practices and fraud detection and prevention in the Nigerian banking sector. The study will be particularly useful because it focuses on selected commercial banks in Lagos State and examines four specific dimensions of forensic accounting practices. Researchers undertaking studies in accounting, forensic accounting, auditing, banking and financial management may use the findings as a basis for further investigation.

1.7 Scope of the Study

The study focuses on the effect of forensic accounting practices on fraud detection and prevention in selected commercial banks in Lagos State.

The independent variable, forensic accounting practices, will be examined through four dimensions:

• Forensic investigation;
• Data analytics;
• Fraud-risk assessment; and
• Litigation support.

The dependent variable, fraud detection and prevention, will be examined in terms of the ability of selected commercial banks to identify suspicious activities, detect fraudulent transactions promptly, reduce opportunities for fraud, strengthen anti-fraud controls and minimize the occurrence of financial fraud.

Geographically, the study is restricted to selected commercial banks operating in Lagos State. The respondents will be drawn from relevant categories of bank personnel whose duties and experience provide them with knowledge of accounting, auditing, risk management, compliance, internal control, fraud investigation and related banking activities.

The study does not attempt to examine every factor that may influence fraud detection and prevention. Factors such as organizational culture, employee remuneration, cybersecurity architecture, regulatory enforcement, customer behaviour and general economic conditions may influence fraud outcomes but are outside the primary variables of the present study.

1.8 Operational Definition of Terms

Forensic Accounting: A specialized area of accounting that applies accounting, auditing, investigative, analytical and legal skills to examine financial information, identify irregularities and provide evidence that may be used in dispute resolution or legal proceedings.

Forensic Accounting Practices: The specialized accounting and investigative procedures used to identify, analyze, investigate and respond to suspected financial irregularities and fraudulent activities.

Forensic Investigation: The systematic examination of financial records, transactions, documents and related evidence for the purpose of establishing facts concerning suspected fraud or financial misconduct.

Data Analytics: The systematic use of analytical techniques and technological tools to examine large volumes of financial and transactional data in order to identify unusual patterns, anomalies, relationships or transactions that may indicate fraud.

Fraud-Risk Assessment: The process of identifying, analyzing and evaluating areas within an organization where fraudulent activities may occur and determining the likelihood and potential impact of such activities.

Litigation Support: The provision of financial, accounting, investigative and analytical assistance by forensic accounting professionals to support legal proceedings, dispute resolution, prosecution or defence.

Fraud: An intentional act of deception, concealment or manipulation undertaken by an individual or group to obtain an unauthorized financial or other benefit.

Fraud Detection: The process of identifying, recognizing and investigating transactions, activities or circumstances that indicate the occurrence or possible occurrence of fraudulent conduct.

Fraud Prevention: The policies, controls, procedures and practices established to reduce the opportunity, likelihood and occurrence of fraudulent activities.

Commercial Bank: A financial institution licensed to accept deposits, provide loans and credit facilities, facilitate payments and perform other banking services for individuals, businesses and other organizations.

Internal Control: The policies, procedures, systems and mechanisms established by an organization to safeguard assets, ensure reliable financial reporting, promote operational efficiency and support compliance with applicable laws and regulations

Project – Effect of Forensic Accounting Practices on Fraud Detection and Prevention in Selected Commercial Banks in Lagos State