KwaZulu-Natal Police Commissioner Nhlanhla Mkhwanazi is expected to focus on Police Minister Senzo Mchunus alleged associate Brown Mogotsi on Friday.
Mkhwanazi will continue to testify before the Madlanga Commission of Inquiry in Pretoria.
He has fingered Mogotsi, a North West-based businessman, as one of the key figures who interfere in high-profile police investigations.