Diezani Asset Case: Why UK Acquittal May Not End Nigeria’s Forfeiture Battle
The legal battle involving former Petroleum Minister Diezani Alison-Madueke has entered a fresh phase as the Economic and Financial Crimes Commission (EFCC) challenges her attempt to rely on her recent United Kingdom acquittal in proceedings over assets in Nigeria.
The development has shifted attention from the headline of her UK acquittal to a more fundamental legal question: does being acquitted of criminal charges in Britain automatically affect separate forfeiture proceedings before a Nigerian court? The EFCC says it does not, arguing that the two cases involve different proceedings and issues.
Alison-Madueke was acquitted by a jury at London’s Southwark Crown Court on June 17, 2026, after facing six bribery-related charges. The verdict brought an end to the criminal prosecution in the UK, where British authorities had alleged that she accepted benefits from oil and gas industry figures seeking favourable treatment. She denied wrongdoing throughout the case.
Following the UK verdict, Alison-Madueke sought to introduce the judgment as a subsequent development in her case before the Federal High Court in Abuja. Her lawyers argue that the acquittal is relevant to issues including fair hearing, due process, the absence of a conviction and the propriety of depriving her of property.
The EFCC, however, has taken a different position. In a further counter-affidavit filed on October 5, the commission argued that the Southwark Crown Court proceedings were not proceedings before a Nigerian court and had no direct bearing on the substantive issues before Justice Inyang Ekwo of the Federal High Court in Abuja.
The anti-graft agency further contended that the forfeiture order being referenced by the former minister relates specifically to jewellery and does not automatically extend to every other property or asset mentioned in the Nigerian proceedings. It also argued that Alison-Madueke’s supplementary affidavit introduced matters that could divert attention from the core questions the Nigerian court is required to determine.
For Alison-Madueke’s legal team, however, the UK judgment remains significant—not necessarily because it should determine the Nigerian case, but because it represents a new development that occurred after some of the earlier court processes had been filed. Her lawyers have maintained that they are not asking the Nigerian court to sit as an appellate court over the London judgment, but to consider it as a material fact in deciding the dispute.
The distinction is important because criminal prosecution and asset-forfeiture proceedings can raise different legal questions. The UK case concerned criminal allegations of bribery, while the Nigerian proceedings involve challenges connected with the forfeiture and proposed disposal of assets. Consequently, the outcome of one proceeding does not necessarily determine the outcome of the other.
The dispute also highlights the complicated international dimension of financial-crime cases involving politically exposed persons. Alison-Madueke’s legal battles have stretched across Nigeria, the UK and the United States, reflecting the difficulty of tracing, recovering and litigating over assets allegedly connected to high-value corruption investigations. Her UK acquittal ended that particular criminal prosecution but did not automatically terminate every legal or civil proceeding connected with assets.
The Federal High Court has now fixed November 11, 2026, for hearing of the pending applications. The court will subsequently have to determine the competing arguments over whether and to what extent the UK judgment can be considered within the Nigerian proceedings.
For now, the central issue is therefore not whether Diezani Alison-Madueke was acquitted in Britain—that fact is settled—but what legal weight, if any, that acquittal should carry in a separate Nigerian asset-forfeiture dispute. The answer will be determined by the Federal High Court as it considers the arguments from both sides.
