The party has come under increasing pressure after losing three metros in the local elections.
University of Pretoria political analyst professor Tinyiko Maluleke says this inquiry will be very difficult for the ANC.
“It’s going to be a hugely problematic process for the ANC, which has until now, have been worrying of all sorts of issues around the president.”
He also says this is likely to put more strain on the party during a time when it has to find a new leader.