The commission, chaired by deputy chief justice Raymond Zondo, is looking into allegations of state capture, corruption and fraud in the public sector.
Former SA Airways (SAA) CFO Phumeza Nhantsi testified on Tuesday and Wednesday that she realised she was being used as "a vehicle for people to enrich themselves" after she found out that the board of a company from which the airline wanted to solicit a R15bn loan was chaired by ANC secretary-general Ace Magashule's sister.