How Nigeria secured a rare elite corruption conviction

On Monday, a senior Nigerian official who once rose to oversee the country’s treasury at a moment of crisis was sentenced to decades in prison for diverting public funds—delivering one of the country’s most consequential corruption convictions in recent years.

Justice James Omotosho of the Federal High Court in Maitama, Abuja, found Chukwunyere Anamekwe Nwabuoku, 64, who was the interim accountant-general of the federation between May and July 2022, guilty of laundering ₦868 million and sentenced him to a cumulative 72 years in prison. The terms—eight years on each of nine counts—are to run concurrently from March 23.

Part of the funds, the court heard, had been allocated to the Ministry of Defence for operations against the jihadist group Boko Haram.

“The evidence is clear that funds meant for the Ministry of Defence were converted to personal use when they were transferred into corporate accounts for the benefit of the defendant,” the judge said.

Nwabuoku, the court held, channelled the funds into securities—what the judge described as a textbook laundering method aimed at masking illicit proceeds.

“The defendant… claimed he had so many investments. However, the evidence before the court did not provide any business activity to explain the amount of money he controlled,” Omotosho said.

The case was prosecuted by the Economic and Financial Crimes Commission (EFCC), an agency often criticised for securing large numbers of convictions—many involving internet fraud—while high-level political and bureaucratic corruption cases drag on or collapse.

In recent years, the EFCC has reported thousands of annual convictions, but only a small fraction involve senior public officials. Against that backdrop, Nwabuoku’s conviction stands out for both the seniority of the office and the relative speed of the case, which moved from filing in 2024 to judgment in 2026.

How the money moved

Prosecutors said Nwabuoku abused his role as Director of Finance and Accounts at the Ministry of Defence between 2019 and 2021 to divert public funds through multiple accounts.

The charges alleged that he worked with companies and associates to convert government funds for personal use. Investigators said he opened and operated several bank accounts through which the money was routed.

At the start of the case, he was charged alongside another civil servant, Felix Nweke, but the EFCC later dropped the charges against Nweke after he agreed to testify.

In court, Nweke told the judge that Nwabuoku used four companies—Coiglobal, Nabyec, Arafura and Kemo—to divert as much as ₦1.96 billion in public funds. The money, he said, was funnelled through accounts operated by a proxy, Gideon Joseph.

The judge agreed that the defendant masterminded the opening and operation of the corporate accounts used to receive proceeds of unlawful activity.

Evidence presented in court showed that the diverted funds were moved into investment accounts, including a portfolio with Quantum Zenith Securities, where they were used to buy and trade financial assets.

“This is a classic example of what money laundering does,” the judge said. “It is the putting of dirty money into legitimate business which helps to clean the money.”

The court noted that Nwabuoku failed to explain how he acquired assets, including a property valued at ₦64 million and shares worth ₦200 million.

Investigators also traced about ₦355 million through accounts linked to him, including funds paid into the account of Mdavies Ltd on his behalf.

“There was no explanation of what the money was meant for… no business transaction… to warrant such huge transfers,” the judge said in convicting him on that count.

The court further observed that prior to 2019, the defendant’s account balance stood at about ₦3 million. Large inflows began shortly after.

“The timeline is quite curious as it coincides with the timeline of the said offences,” Omotosho said.

The man behind the office

Nwabuoku’s conviction caps a long civil service career marked by steady advancement through Nigeria’s public finance system.

Born October 15, 1962, in Ehime Mbano Local Government Area of Imo State, he holds a Higher National Diploma in Accountancy from the Institute of Management and Technology, Enugu, and a master’s degree in Financial Management from Commonwealth University, Belize.

He began his career at the Centre for Democratic Studies and rose through the ranks to become a principal accountant between 1992 and 1995. He was later deployed to the Office of the Accountant-General in Abuja, where he served as Assistant Chief Accountant.

Between 2001 and 2003, he worked at the National Assembly as Special Assistant on Public Affairs to the Senate President.

He went on to serve in key finance roles, including at the Ministry of Defence, where he was Head of Accounts Administration and later Director of Finance and Accounts, overseeing funds between 2019 and 2021.

He also held positions at the Office of the Secretary to the Government of the Federation, where he supervised Ecological Funds accounts, and at the Office of the Head of the Civil Service.

In May 2022, he was appointed acting accountant-general following the suspension of Ahmed Idris over alleged corruption involving more than ₦100 billion.

Nwabuoku’s tenure lasted only weeks. He was removed in July 2022 over separate allegations of financial misconduct.

Refunds and failed settlement bid

Nwabuoku was re-arraigned on January 15, 2025, on a nine-count amended charge of money laundering involving ₦868 million.

During the trial, Nwabuoku sought time to negotiate an out-of-court settlement with the EFCC—a move the prosecution did not oppose at the time.

“Although we have five witnesses in court and are prepared to proceed… we will not oppose it,” lead prosecutor Ekele Iheanacho said.

The EFCC said the defendant refunded ₦220 million and surrendered a five-bedroom duplex in City Gate Estate, Abuja.

But the settlement effort ultimately failed to halt proceedings. The judge said the refund—unchallenged in court—reinforced the prosecution’s case.

“The implication of this is that the defendant admitted the crime… if he did not have a guilty mind, he would not have refunded the money,” he said.

The court later dismissed Nwabuoku’s no-case submission and ordered him to open his defence.

The court found him guilty on all counts, including conspiracy, concealment of funds, and laundering through corporate and proxy accounts.

In delivering judgement, the court detailed how each count was proven, including the concealment of ₦355 million and the use of multiple entities to receive and move illicit funds.

Omotosho sentenced him to eight years on each count, without the option of a fine.

Other high-profile convictions

While rare, some high-profile convictions have been recorded in recent years.

A Federal High Court in Abuja sentenced a former managing director of the Nigerian Export-Import Bank, Robert Orya, to multiple prison terms totalling 490 years for a ₦2.4 billion fraud. The sentences, however, run concurrently.

The Independent Corrupt Practices Commission (ICPC) also secured the conviction of Garuba Mohammed Duku, a former finance director in the Federal Capital Territory Administration, over ₦318 million in corruption and money laundering charges. He was sentenced to four years on each of six counts, also to run concurrently.

Such cases remain exceptions in a system where high-level corruption prosecutions often take years to conclude.

Meanwhile, the case against Nwabuoku’s predecessor, Ahmed Idris, remains ongoing.

He is facing a 14-count charge involving ₦109.5 billion and has denied wrongdoing.

At a recent hearing, Idris disputed key of the prosecution’s case, including claims about statements he made to investigators and the role of individuals allegedly present during questioning.

He also told the court he had initially cooperated with investigators following an invitation from then EFCC chairman Abdulrasheed Bawa, who he said assured him he would not be prosecuted if he cooperated.

Idris said he had not seen the former Minister of Finance, whom he claimed was mentioned during the investigation, charged alongside him.