Thabo Mbeki, the former South African president, is expected to give evidence at an inquiry into a $5bn arms deal negotiated 15 years ago that has been dogged by corruption claims.
Mbeki was president when the deal was signed. Two people are already serving prison terms for accepting bribes from arms companies involved in the deal.
Al Jazeera's Tania Page reports from Johannesburg.
Source: Al Jazeera