The NPA’s Investigating Directorate have arrested former Eskom acting CE Matshela Koko, his wife Mosima and his stepdaughter Koketso Choma on charges of corruption.   The charges relate to a multibillion-rand contract Eskom entered into with Swiss engineering company Asea Brown Boveri (ABB) in 2015. ABB subcontracted to a local company, Impulse International, where Choma was a shareholder. She received R30-million from the deal, some of which then flowed to Mosima Koko.