The former South African president, who resigned his post last month under heavy pressure, now faces 16 counts — ranging from fraud to racketeering — for his role in an arms deal two decades ago.
Jacob Zuma faced corruption allegations even before he became president in 2009. A steady stream of charges has dogged his nine-year tenure, the rockiest period in South Africa's post-apartheid era.
The ruling African National Congress should not be "divided in my name," Zuma said Wednesday. "I have therefore come to the decision to resign as the president of the republic with immediate effect."
The African National Congress has been negotiating with the scandal-plagued Zuma to step down for the good of the party, but he insists on serving out his full term, which expires next year.
Zuma has been mired in corruption allegations. Some in his African National Congress fear if he stays on until elections next year, he could damage the party's chances of retaining power.
It's the sixth time South African President Jacob Zuma has faced a possible vote of no confidence — and for the first time, the vote was held by secret ballot.
A powerful South African union federation that had been a key ally of President Jacob Zuma is the latest group to call for him to resign. Zuma has shown no sign that he will do so.