Abstract:
Wrongful conviction occurs where a court pronounces guilty verdict and sentences a person 
for an offence not committed. This phenomenon, which is becoming more apparent in the 
Criminal Justice System of Nigeria (CJS), contravenes the basic principle of justice that no one 
should suffer for offences not committed. Previous studies have focused more on causes of 
wrongful conviction in Nigeria and other jurisdictions with little attention paid to its effects on 
victims and their reintegration into society. This study was, therefore, designed to investigate 
the causes, effects and legal implications of wrongful conviction in Nigeria with a view to 
enhancing the reintegration of victims.
Due Process and Justice theories were adopted. The Constitution of the Federal Republic of 
Nigeria 1999 (as amended), Criminal Procedure Act, Penal Code Act, Evidence Act, 
Administration of Criminal Justice Act 2015 and some judicially determined cases were the 
primary sources used. Legal text, journal articles, newspapers, magazines (digital and prints) 
were the secondary sources. In-depth interviews were conducted with three victims of 
wrongful conviction, two members of victims‘ family, eight police officers, five legal 
practitioners, three non-governmental organisation officials, four law officers from the 
Ministry of Justice, one officer each from three government establishments (Legal Aid 
Council, National Human Rights Commission and Office of the Public Defender), four 
magistrates and four forensic experts. Data were subjected to content and comparative 
analyses.
Prosecutorial misconduct and underutilisation of forensic evidence were the leading causes of 
wrongful conviction in Nigeria. Different levels of inefficiency and misconducts by the police, 
prosecutors, defence counsel, judicial officers and other stakeholders in the CJS gave rise to 
incessant occurrence of wrongful conviction in Nigeria. In one of the case studies, the court 
convicted and sentenced the victim to death on the sole basis of confessional statements 
involuntarily obtained from the victim by the investigating police officer. In another case, the 
prosecutor falsified inculpatory evidence and suppressed exculpatory evidence to obtain 
conviction against the victim. Wrongful conviction causes social, psychological, physical and 
financial harm to the victims. It ruined victims‘ lives, destroyed their careers and led to their 
separation from family. Even after exoneration, victims of long-term wrongful imprisonment 
found it difficult to fit back into the society due to the resultant permanent physical, 
iii
psychological and emotional disorders. These amounted to a violation of the victims‘ 
fundamental right to freedom guaranteed by the Constitution. Consequently, citizens lose 
confidence in the CJS.
Wrongful conviction occasioned by criminal justice actors‘ misconduct and forensic 
inefficiency impacted negatively on victims‘ lives, break family bonds and undermines the 
Nigerian Justice System. There is the need to increase access to modern forensic test in crime 
investigation, ensure the preservation of evidence, properly apply relevant laws and introduce 
compensation schemes for victims wrongfully convicted