Members of Zimbabwe's opposition say they have been targeted by Mugabe supporters following the president's re-election.
President Robert Mugabe's declaration as winner has been met by international concern over the conduct of the African nation's poll.
Robert Mugabe has secured his grip on power in Zimbabwe today after his party ZANU PF won a majority in parliament in Wednesday's election.
Former Prime Minister Tony Blair has denied claims his government asked South Africa for their support in invading Zimbabwe and toppling Robert Mugabe.
Thabo Mbeki, the former South African president, said his country and Britain had differing opinions on how to deal with Zimbabwe in 2000, when they were hit by an economic collapse and political repression. Mr Blair wanted Mugabe to go while Mr Mbeki favoured political negotiation.
Mr Mbeki, who served as president from 1999 until 2008, told Al Jazeera: "The problem was, we were speaking from different positions.
“There were other people saying ‘yes indeed there are political problems, economic problems, the best way to solve them is regime change. So Mugabe must go.’
"This was the difference. So they said ‘Mugabe must go’. But we said ‘Mugabe is part of the solution to this problem’.”
A spokesman for the former Prime Minister said: "Tony Blair has long believed that Zimbabwe would be much better off without Robert Mugabe and always argued for a tougher stance against him, but he never asked anyone to plan or take part in any such military intervention."
Zimbabwe's President Robert Mugabe on has berated the United States, Britain and its allies for trying to control his nation and its resources.
In a speech to the United Nations General Assembly, the 89-year-old called for them to remove their "illegal and filthy sanctions."
"Shame, shame, shame to the United States of America. Shame, shame, shame to Britain and its allies", he said.
"Zimbabwe is for Zimbabweans, so are its resources", he added.
Sanctions were imposed on Zimbabwean state firms and travel restrictions on Mugabe and dozens of his associates after a violent election in 2000.
There were also additional sanctions at the start of sometimes violent seizures of white-owned commercial farms for black resettlement.
Zimbabwe President Robert Mugabe has said that Britain and the US should not 'harass' the African nation, referring to sanctions that he says are pressuring his government.
"They should not continue to harass us, the British and Americans," Mugabe, Africa's oldest leader at 89, said at the funeral of an airforce officer.
"We have not done anything to their companies here, the British have several companies in this country, and we have not imposed any controls, any sanctions against them, but time will come when we will say well, tit for tat, you hit me I hit you."
Zimbabwe President Robert Mugabe threatened on Sunday to retaliate "tit for tat" against companies from Britain and the United States if these Western powers persisted in pressuring his government with sanctions and what he called "harassment".
Mugabe has fiercely rejected questioning from the West of a July 31 election that returned him to power in the southern African country he has ruled for 33 years. His main rival called the election a "huge fraud".
Zimbabwean President Robert Mugabe branded the West "vile" and said his critics could "go hang", shortly after taking his oath of office today.
"Except for a few Western dishonest countries, our elections have been hailed as peaceful, free, fair and credible," the 89-year-old told supporters in an hour-long speech.
– Zimbabwean President Robert Mugabe
For those odd Western countries who happen to hold a different negative view of our electoral process and outcome, there is not much that we can do about them. We dismiss them as the vile ones whose moral turpitude we must mourn.
A full National Sports Stadium in Harare watched Robert Mugabe sworn in as Zimbawe president for his seventh five-year term.
Zimbabwean President Robert Mugabe has been sworn in for a new five-year term in the face of criticism from opponents and the West that the election he won in July was deeply flawed.
Mugabe, who has ruled since independence from Britain in 1980, has told critics of his re-election to "go hang" and has vowed to press ahead with nationalist policies forcing foreign firms to turn over majority stakes to black Zimbabweans.
Britain has called for an independent investigation of alleged vote-rigging in Zimbabwe as Robert Mugabe prepared to be signed in for a seventh term as president.
Mugabe's victory in July's poll was declared free and fair by the country's top court despite what Foreign Secretary William Hague described as "strong evidence" of illegality.
"I strongly believe that an independent investigation of any allegations of election irregularities would be required for the election result to be deemed credible," he said in a statement.
"I have grave concerns over the conduct of the election, and the flaws highlighted in the South African Development Community (SADC) and African Union (AU) observation missions' initial assessments."
Zimbabwean President Robert Mugabe has launched an attack on critics of his disputed re-election, telling them bluntly to "go hang".
In his first public address since his election win, Mr Mugabe dismissed his rivals as "Western-sponsored stooges" at a liberation war commemoration.
The leader of Zimbabwe's Movement for Democratic Change party and Mr Mugabe's main rival, Morgan Tsvangirai, boycotted the rally as allegations of election fraud continued.
Zimbabwean President Robert Mugabe told critics of his disputed re-election to "go hang" dismissing his rivals as "Western-sponsored stooges" at a liberation war commemoration that was boycotted by his principal challenger, Morgan Tsvangirai.
Speaking in the local Shona language, in colloquial phrases he does not usually use when speaking in English, Mugabe called on Tsvangirai to accept defeat:
"Those who are smarting from defeat can commit suicide if they so wish. But I tell them even dogs will not sniff at their flesh if they choose to die that way," he said.
He described Tsvangirai as the "enemy" in his party's midst during the shaky coalition brokered by regional leaders after the last disputed and violent poll in 2008.
"We have thrown the enemy away like garbage. They say we have rigged, but they are thieves"