Johannesburg - South African President Jacob Zuma has apologised for fathering a child with a woman who was not his wife.

The daughter of a World Cup chief gave birth to a baby girl last year believed to have been fathered by Mr Zuma.

Mr Zuma, aged 67, is a Zulu, a group which practises polygamy. He has three actual wives and at least 19 children.

Earlier this week, the president confirmed that he was having a relationship with Sonono Khoza - the 39-year-old daughter of World Cup official Irvin Khoza.

Mr Zuma was praised last year when he announced major changes to the country's Aids policy, which included increasing the roll-out of anti-retroviral drugs.

Mr Zuma has been married five times in all, most recently in January, and is also engaged to another woman.

He has 19 children according to his office, but it is not clear if that includes the baby born last October.