Morgan Tsvangirai feared for supporters' safety at the polls
Zimbabwe's opposition leader Morgan Tsvangirai has taken refuge in the Dutch embassy in the capital, Harare.
A Dutch foreign ministry spokesman said Mr Tsvangirai had spent the night at the embassy as he feared for his safety but had not requested asylum.
On Sunday, he announced he was withdrawing from a presidential election run-off in the face of violence from ruling party militias.
Zimbabwean officials have said the second round will still go ahead.
But Botswana's Foreign Minister Pando Skelemani said leaders of the Southern African Development Community (Sadc) would have to decide whether Zimbabwe could have a legitimate president in the current political climate.
"If in fact the atmosphere for an election is not free and fair you then can't have someone having won," he told the BBC.
"It would be the same as if you had been through the election and they are declared not free and fair, then you are back at square one."
Ahead of a UN Security Council discussion about Zimbabwe, US Secretary of State Condoleezza Rice said President Robert Mugabe's regime "cannot be considered legitimate in the absence of a run-off".
Mr Tsvangirai says pressure from the UN and Sadc could force Mr Mugabe to give up power.
"My assessment is that if there is a collective position by all Sadc leaders, that would be sufficient pressure - that voice is essential," he told US National Public Radio.
Police told AFP people were removed from the MDC HQ for hygiene reasons
"The conditions of the Security Council on Zimbabwe has one outcome that we will expect... to appoint a mission to investigate the level of abuses that have taken place - rape, torture, murder - and the various human rights abuse that has taken place."
Former UN Secretary General Kofi Annan told the BBC that he believed the elections should be postponed:
"Honestly, given what has happened, I doubt that anyone would accept the results, so they should put off the elections. But I think it is important that we all realise that Zimbabwe needs our help."
Zimbabwe's Justice Minister Patrick Chinamasa said Mr Tsvangirai's announcement of his withdrawal was a ruse as he had not sent a formal notice yet.
The BBC's Peter Biles in Johannesburg says Mr Tsvangirai is now considering his next move, but he remains in the Dutch compound.
ZIMBABWE AND ITS NEIGHBOURS
Zimbabwe's opposition wants neighbouring countries to persuade
Robert Mugabe to step down. So how are relations changing?
South Africa's leader Thabo Mbeki remains the key mediator. He has not
criticised Mr Mugabe, despite pressure from the ruling ANC.
Zambian President Levy Mwanawasa called Zimbabwe a "regional
embarrassment", before suffering a stroke on 29 June.
Angola's President Jose Eduardo dos Santos is one of Robert Mugabe's closest allies. He has urged Mr Mugabe to end the violence.
Botswana said Zimbabwe's 27 June run-off vote was so flawed by violence
that it could not be considered legitimate.
Namibia is an ally of Robert Mugabe. It wants to re-distribute white-owned farms to black villagers. It has not criticised the violence.
Mozambique has hosted some white farmers forced out of Zimbabwe when their land was seized. It is seen as sympathetic to the opposition.
Tanzania's ruling party has a history of backing Robert Mugabe's
Zanu-PF party. Its foreign minister has condemned the violence.
DR Congo's President Joseph Kabila is an ally of Robert Mugabe who
sent troops to help his father, Laurent Kabila, fight rebels.
Malawi is seen as neutral. But 3m people from Malawi are in Zimbabwe
and many were badly hit by the farm invasions.
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