EOCO has intensified its investigation into the Ghanaian side of the Asante Berko bribery case following his US conviction, with asset tracing and recovery now part of the probe. EOCO has intensified its investigation into the Ghanaian side of the Asante Berko bribery case following his conviction in the US. AdvertisementAdvertisementThe Economic and Organised Crime Office (EOCO) has intensified its investigation into the bribery case of Asante Kwaku Berko following the former Goldman Sachs banker’s conviction in the United States. In a statement issued on Monday August 10, EOCO said the Attorney-General had directed it to escalate the Ghanaian investigation after Berko’s US case was concluded. What the Berko case is aboutThe US case dates back several years and centres on a power plant project in Ghana.