'You don't imprison a man on theories' – Atta Akyea challenges witness in Adu-Boahene trial

Samuel Atta Akyea, Lawyer for former National Signals Bureau (NSB) Director-General, Kwabena Adu-Boahene, has challenged the testimony of a key prosecution witness in the ongoing trial involving his client.

His remarks came after the prosecution began examining Economic and Organised Crime Office (EOCO) investigator, Frank Marshall Cromwell, who is leading investigations in the case.

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Speaking to journalists after the proceedings on June 22, 2026, he said that no one should be convicted based on theories or assumptions.

“... He was a witness I was waiting for, and when we start a cross-examination, the whole world will know that you don't imprison a man based on your theories and even lack of understanding of national security matters," he said.

Atta Akyea questioned the credibility of Cromwell's testimony, describing the EOCO investigator as the prosecution's key witness.

"Well, this is the most important witness for the prosecution. He's trying to explain his investigations. So, he's doing some work, and I'm afraid he's probably a conveyor belt for the Attorney General, to show whether he did some investigations or he's trying to put across some theories for the judge to swallow. So, let's see how it pans out," he stated.

The lawyer also dismissed suggestions that a national security official seeking to steal public funds would do so through the banking system.

"We are in a very interesting theater. If a national security Capo wants to steal money, will he steal the money through a bank? We'll see," he stated.

Atta Akyea said he was particularly interested in Cromwell's testimony because it forms the foundation of the prosecution's case against his client.

He maintained that any conviction must be supported by credible evidence and not speculation.

"You will come out clearly on good evidence, which will be the basis to convict a man. So, I'm excited that he started, but he can't improve upon his witness statement," Atta Akyea added.

During the proceedings, the EOCO officer, who was the investigator in the matter, told the court that an invoice presented by Kwabena Adu-Boahene for the purchase of the GH¢49.1 million cyber defence system was fake, according to multiple reports.

Marshall Cromwell is reported to have told the court that only about GH¢9.5 million was paid to ISC Holdings, the Israeli firm that was supposed to supply the cyber defence system, even though the entire GH¢49.1 million was transferred for the said transaction.

“In the GH¢49.1 million cybersecurity theft case, the EOCO investigator, Frank Marshall Cromwell, told the court that Kwabena Adu-Boahene paid GH¢9,537,500 to ISC Holdings for the cyber defence system, despite the full GH¢49.1 million being earmarked and transferred for its payment,” Accra-based TV3 wrote in a post shared on X on Monday, June 22, 2026.

GH¢49.1m NSB Trial: Only GH¢9.5m reached Israeli supplier; Adu-Boahene’s invoice was fake – EOCO officer

The EOCO investigator also told the court that after the account holding the money was depleted, the former NSB boss and his wife, Angella Adjei-Boateng, the second accused in the case, instructed their bankers at UMB to close the accounts and transfer the remaining funds to Advantage Solutions, a company they own.

“You don’t imprison a man based on your theories and lack of understanding of national security matters.” - Lawyer for the former NSB boss after the prosecution began its examination-in-chief of EOCO investigator Frank Marshall Cromwell. pic.twitter.com/TAUGkt2MhK

— EDHUB🌍ℹ (@eddie_wrt) June 22, 2026