How SunTrust Bank MD Allegedly Laundered $12 Million for Businesswoman Aisha Achimugu: Witness Testifies in Court
The veil has been partially lifted on one of Nigeria’s most closely watched money laundering trials in recent months, as courtroom revelations this week exposed what prosecutors describe as a coordinated scheme involving top executives of SunTrust Bank and prominent businesswoman, Aisha Achimugu. The unfolding legal drama, which centers on the alleged laundering of $12 million over just ten days, has sent shockwaves through both Nigeria’s banking industry and political circles, raising fresh concerns about the extent to which financial institutions are being used to launder illicit funds under the guise of legitimate transactions.
At the heart of the case are Halima Buba, Managing Director of SunTrust Bank, and Innocent Mbagwu, the bank’s Executive Director. Both were arraigned before Justice Emeka Nwite of the Federal High Court in Abuja on June 13, 2025, by the Economic and Financial Crimes Commission (EFCC) on six counts of money laundering, allegedly in connection with transactions coordinated for Mrs. Aisha Achimugu, a well-known figure in Nigeria’s energy and real estate sectors.
Despite the serious nature of the allegations, the defendants pleaded not guilty and were subsequently granted bail in the sum of ₦100 million each, with one surety in like sum. The conditions for bail have not dampened public interest, especially following the gripping testimony of the prosecution’s first witness, a former Bureau de Change operator named Suleman Chiroma, who claimed to have facilitated the foreign exchange components of the transactions in question.
Suleman Chiroma, taking the witness stand on Thursday, July 17, recounted a sequence of events that appeared meticulously organized and executed through high-level banking contacts, informal currency exchanges, and digital communication. According to Chiroma, Mrs. Achimugu first contacted him on March 10, 2025, requesting help with a series of foreign exchange swaps — specifically, naira-for-dollar exchanges to be executed quickly and discreetly.
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He explained to the court that after receiving Achimugu’s request, he reached out to Ms. Halima Buba, who was not only aware of the transaction but actively facilitated its execution. Chiroma stated that within hours, he was contacted by a man named Iliya, who told him he was at SunTrust Bank’s Abuja branch to collect $1 million in cash. The naira equivalent of that sum, Chiroma said, was directed to Oceangate Energy Oil & Gas, a company said to be owned by Achimugu and with an account domiciled at Zenith Bank.
The process was replicated several times over the next ten days, with cash sums as high as $2 million allegedly being handed over at SunTrust Bank’s branches in both Abuja and Lagos, and the naira equivalents quietly deposited into Oceangate’s account. According to Chiroma, the transactions were often coordinated through WhatsApp messages and phone calls, with both bank executives playing distinct roles: Buba handled Abuja, while Mbagwu oversaw Lagos-based transactions.
Key Players in the Money Trail
The testimony highlighted a network of individuals mobilized for the operation. Among them were:
- Hassan Dankali of Ashrap Ltd, described by Chiroma as a close associate, who sent various agents to collect cash
- Tijjani Adamu, dispatched to collect cash in Abuja
- Kabiru and Abdulkadir Mohammed, who received large dollar sums
- Muktar Miko and Sani, operatives involved in Lagos and later Abuja transactions, allegedly collecting cash from Mbagwu
Chiroma testified that on March 13, 2025, he was informed of another available $1 million cash sum at the Lagos branch. After verifying the transaction through Buba and initial confusion with Mbagwu, the funds were eventually released to Chiroma’s agents. The next day, an additional $2 million was collected. This cycle continued through March 24, culminating in what EFCC alleges was a total of $12 million laundered in just two weeks.
When probed about the purpose behind the large transactions, Chiroma claimed Achimugu had confided in him that she intended to acquire an oil bloc, and needed dollar inflows into her corporate accounts to demonstrate liquidity and financial credibility. This statement, according to EFCC prosecutors, strongly suggests motive and potentially preconceived intent to bypass Nigeria’s financial monitoring systems.
In his own words:
Aisha Achimugu informed me that she was planning to purchase an oil bloc and would require dollar inflows into the Oceangate Energy Oil & Gas account.
This reasoning might appear legitimate on the surface, but the method of funding — particularly the use of physical cash, unregulated third-party agents, and the avoidance of conventional banking trails — raises significant red flags for investigators.
Chiroma’s testimony was supported by digital evidence, including WhatsApp chat printouts with the first defendant (Buba) and a certificate of identification attesting to their authenticity. Justice Nwite admitted these documents into evidence as Exhibit P1, despite defense objections.
The defense counsel, J.J. Usman (SAN) and M.S. Ibrahim, opposed the admissibility of the exhibits but chose to reserve their arguments until final addresses — a strategic move indicating their intent to challenge procedural or evidentiary aspects of the trial later in the process.
Beyond the individuals implicated, the case has ignited broader concern over the role of Nigerian banks in enabling illicit financial flows, especially through executive-level complicity. The fact that multiple million-dollar transactions were allegedly executed in cash, through official bank branches, without triggering red flags from compliance departments, has drawn criticism from financial watchdogs and civil society groups.
The Money Laundering (Prevention and Prohibition) Act, 2022, clearly mandates financial institutions to report suspicious transactions, including large cash deposits and withdrawals exceeding set thresholds. Yet, in this case, not only were the transactions not flagged, but they were allegedly facilitated and coordinated by senior officials of the very institution expected to prevent such actions.
For critics, the situation underscores the urgent need for enforcement reforms, not just in law, but in banking governance, compliance training, and digital transparency.
Though not a defendant in the current trial, Aisha Achimugu stands at the center of the allegations. She is known in business and political circles as a wealthy entrepreneur with interests in oil and gas, real estate, and philanthropy. Her name has previously surfaced in connection with controversial transactions involving government contracts and infrastructure deals.
The implication of her name in this case — particularly given the sheer volume of the funds allegedly laundered for her benefit — has led to speculation about her possible political protection, or whether further charges might be filed down the line. The EFCC has not publicly confirmed whether investigations into her finances are ongoing, but Chiroma’s testimony suggests a direct and knowing involvement.
Legal analysts observing the trial suggest the prosecution’s strategy is focused on establishing conscious facilitation of the illicit financial flows by the two bank executives. Under Nigeria’s anti-money laundering law, even knowledge of an illicit transaction — without necessarily benefitting from it — can constitute criminal liability if the person in question plays a facilitating role.
There’s also the question of institutional liability. Will SunTrust Bank face sanctions or regulatory investigations? What role did the bank’s internal audit and compliance teams play? How was it possible for $12 million to move through two branches in cash without detection?
The Central Bank of Nigeria (CBN) has yet to comment on the case, but if the allegations are proven, it could prompt a regulatory overhaul or even lead to license sanctions against the bank. The CBN, under increasing pressure to uphold integrity in the banking sector, may not remain silent for long.
Justice Nwite adjourned the matter to a future date (yet to be publicly disclosed at press time) for continuation of hearing. The defense is expected to begin its cross-examination of Chiroma, with both legal teams set to spar over the admissibility of exhibits, credibility of the witness, and the scope of executive responsibility in the transactions.
Given the weight of the evidence presented so far, the case could either result in landmark convictions or collapse under the weight of procedural loopholes — a fate not uncommon in Nigeria’s anti-corruption battles.
What is certain, however, is that the public will be watching closely. In a nation weary of financial scandals and elite impunity, the trial of Halima Buba and Innocent Mbagwu may prove to be a litmus test for institutional accountability in Nigeria’s banking sector.