Zuma visited ailing former president Nelson Mandela in hospital at 10pm on Wednesday, and found him to be still in a critical condition, said spokesman Mac Maharaj.
“President Zuma was briefed by the doctors who are still doing everything they can to ensure his well-being.
“President Zuma has decided to cancel his visit to Maputo, Mozambique, today June 27, where he was due to attend a Southern African Development Community Summit regional infrastructure investment conference.”
Mandela, 94, was admitted to the Medi-Clinic Heart hospital in Pretoria on June 8 for a recurring lung infection.
On Wednesday night, a clan elder revealed that the anti-apartheid icon was on life support.
“Yes, he is using machines to breathe,” Napilisi Mandela told AFP after visiting Mandela. “It is bad, but what can we do.”