Zimbabwean President Robert Mugabe and opposition leader Morgan Tsvangirai have both spoken positively about their talks in Harare on sharing power.
After two days of discussions in a hotel, the two men both said they hoped to address the outstanding issues between them on Wednesday.
“I must say that there is a positive development,” Mr Tsvangirai said.
Speaking to reporters, Mr Mugabe noted there had been “progress – and lack of it – in some areas”.
A special summit meeting on Zimbabwe, due to be held in Swaziland on Wednesday, has been postponed by a day because South Africa’s President Thabo Mbeki is remaining in Harare to conduct the negotiations, a South African official told the BBC.