South Africa's ruling party has decided to sack Jacob Zuma as the country's president, a senior official says.
The decision came after a marathon meeting over the fate of a leader whose scandal-plagued years in power darkened and divided Nelson Mandela's post-apartheid 'Rainbow Nation'.
The decision by the African National Congress's (ANC) national executive followed 13 hours of tense deliberations and one face-to-face meeting between Zuma and his presumed successor, deputy president Cyril Ramaphosa.
Zuma, a polygamous Zulu traditionalist with no formal education, has been living on borrowed time since Ramaphosa, a union leader and lawyer once tipped as Mandela's pick to take over the reins, was elected as head of the 106-year-old ANC in December.
Ramaphosa narrowly defeated Zuma's ex-wife and preferred successor, Nkosazana Dlamini-Zuma, in the leadership vote, forcing him to tread carefully in handling Zuma for fear of deepening the rifts in the party a year ahead of an election.
Despite the damning decision to order Zuma's "recall" - ANC-speak for 'remove from office' - domestic media have speculated that the 75-year-old might yet defy the party's wishes, forcing it into the indignity of having to unseat him in parliament.
Shortly before midnight, the SABC state broadcaster said Zuma had been told in person by Ramaphosa that he had 48 hours to resign. A senior party source later told Reuters Zuma had made clear he was going nowhere.
"Cyril went to speak with him," the source said, adding that when Ramaphosa returned to the ANC meeting in a Pretoria hotel, the discussions were "tense and difficult".
"We decided to recall Zuma. He hasn't been told yet," the source said.
The ANC is expected to hold a media briefing early on Tuesday afternoon to reveal the results of the meeting.
One domestic report said Zuma had asked for three months to resign, a request that was denied.
On Friday, one of Zuma's wives, Tobeka Madiba-Zuma, posted comments on Instagram suggesting Zuma was prepared to fight and believed he was the victim of a Western conspiracy.
"He will finish what he started because he does not take orders beyond the Atlantic Ocean," she said.
South Africa's economy has stagnated during Zuma's nine-year tenure, with banks and mining companies reluctant to invest because of policy uncertainty and rampant corruption.
However, since mid-November when Ramaphosa emerged as a real ANC leadership prospect, economic confidence has started to pick up, while the rand has gained more than 15 per cent against the US dollar.
Zuma is now the focus of a judicial commission into whether he let his friends the Guptas use their relationship with him to win state contracts and influence cabinet appointments.
South Africans have also been outraged by a state-funded $US16 million ($A22 million) security upgrade to Zuma's rural home that included a swimming pool.
Australian Associated Press