An investigator with the Economic and Organised Crime Office (EOCO), Frank Marsahall Cromwell, on Wednesday July 1 defended the prosecution’s assessment of former National Signals Bureau (NSB) Director-General, Kwabena Adu-Boahen’s assets, maintaining that the properties identified during investigations appeared inconsistent with the income investigators were able to establish.
The investigator, who testified as the prosecution’s fourth witness (PW4), in his evidence in chief, explained the basis of the prosecution’s conclusions regarding the accused’s income and assets.
During his evidence, PW4 told the court that investigators reviewed Adu-Boahen’s salary records between 2017 and 2019 and found that he earned an average monthly salary of about GH¢5,000 in 2017, GH¢6,000 in 2018, and GH¢7,000 in 2019.
The witness said investigators considered those earnings when examining several properties linked to Adu-Boahen and his wife, Angela Adjei-Boateng, during the investigation.
According to PW4, investigators identified seven properties at Mayfair Garden Estate, a 27-unit apartment complex at Oyarifa Delsize Park, and another property at Dolchetser Heights, Asokore Mampong, which were subsequently made the subject of freezing orders obtained by the prosecution.
He told the court that EOCO investigators visited Mayfair Garden Estate on March 21, 2025, in the company of Adu-Boahen, his wife, and their lawyers, where they confirmed the existence of seven properties allegedly linked to the couple.
The witness also testified that EOCO obtained payment records from Mayfair Estate, which, together with bank transaction records, formed part of the basis of the investigation.
He said investigators traced a transfer of GH¢1.5 million from the account of BNC Communications Bureau Limited at UMB Bank to Advantage Solutions before the funds were transferred to Mayfair Estate, adding that the transaction corresponded with one of the payment receipts obtained from the estate.
PW4 further testified that investigators later observed payments made through accounts linked to Advantage Solutions, Vertex Solutions, and another company they associated with the accused persons.
Background
Kwabena Adu-Boahen, the former Director-General of the National Signals Bureau, and his wife, Angela Adjei-Boateng, are standing trial over allegations involving the alleged misappropriation of GH¢49.1 million in state funds.
The Attorney-General alleges that funds intended for a cyber defence project were diverted through private companies linked to the accused persons and used to acquire assets and other properties.
The accused persons have pleaded not guilty to the charges and are contesting the prosecution’s case.
Counsel for the accused is expected to begin cross-examination of the investigator on July 2, 2026.































