THE auditor-general Shauket Fakie is investigating how the wife of African National Congress chief-whip Tony Yengeni, came to acquire her luxury Mercedes Benz, the Sunday Times newspaper reported. This comes a week after disclosures that Yengeni owned a Mercedes Benz ML320 4×4 which had been ordered as a staff car by a company which benefited from the R43bn arms deal. The paper reported that Lumka Yengeni’s silver C180, valued at R180 000, was now under investigation. Investigators were looking at the circumstances surrounding the purchase of the vehicle. Documents in possession of the Sunday Times show that Lumka Yengeni’s car was ordered by DaimlerChrysler SA as a staff car. She is a senior executive at Denel, South Africa’s arms parastatal.