Lamoer, three brigadiers and businessman Saleem Dawjee face 109 charges of corruption, racketeering and money laundering.
Hawks financial investigator Wynand Wessels has detailed a relationship between Dawjee and the police officers, in which he gave them gifts and payments worth R1,6 million.
Defence attorneys for Lamoer and Dawjee questioned whether Hawks investigator Wessels had the capabilities to conduct the financial investigation.
Advocate Grant Smith added that the witness merely conducted a few short courses and was not a qualified accountant or auditor.
But Wessels hit back saying he's a member of the International Association of Financial Crimes Investigators and had completed certain basic accounting subjects and exams.
