South Africa's African National Congress party executive committee has decided to "recall," or remove, President Jacob Zuma as head of state, a senior ANC source says.
The party's executive committee has the authority to order Zuma to step down as head of state, although there is speculation he might refuse.
"We decided to recall Zuma. He hasn't been told yet," the senior ANC source says.
Deputy president Cyril Ramaphosa went to speak with Mr Zuma, the source says, adding that when Ramaphosa returned, "the discussions were tense and difficult on whether to recall Zuma".
ANC officials and Mr Zuma's spokesman could not be reached for comment.
The state broadcaster reported that the ANC's executive group has given Mr Zuma 48 hours to resign as head of state.
Mr Zuma's tenure as president officially runs until mid-2019 and he has not said in public whether he will step down voluntarily.
Since becoming president in 2009, Mr Zuma has been dogged by scandal.