Gauteng Community Safety MEC Sizakele Nkosi-Malobane on Tuessday reassured the public that student l.
His website said yesterday that the mother was an American woman whose identity is being kept a secret.
The Real Madrid winger and Portugal captain wrote on his website: "It is with great joy and emotion that I inform (you) that I have recently become a father to a baby boy.
"As agreed with the baby's mother, who prefers to have her identity kept confidential, my son will be under my exclusive guardianship."
No date for the birth was given though the boy is said to be a month old.
The 25-year-old Ronaldo is not married but has over the past few years become a womaniser of note. He has had high-profile flings with tennis star Maria Sharapova, 23, Big Brother star Imogen Thomas, 26, socialites Paris Hilton, 29, and Kim Kardashian, 29.
"I request everyone to fully respect my right to privacy (and that of the child) at least on issues as personal as these," he said.
Hours after the announcement on Ronaldo's Facebook and Twitter sites his pages were suspended.
Portuguese newspaper Correio da Manha reported on its website yesterday that Ronaldo's mother, Dolores, and his sisters Elma and Katia, were dealing with the paperwork necessary to bring the child to Portugal.
During 2009 the Portuguese national team captain spent time in homes he owns in Los Angeles and Miami, the paper said.