HARARE, Zimbabwe (CNN) -- Zimbabwean officials sent out invitations Sunday to a presidential swearing-in ceremony, hours after Robert Mugabe declared himself the winner of the country's runoff elections.

Zimbabwean President Robert Mugabe appears at a campaign rally Thursday. 

A government official confirmed to CNN that invitations had been sent out, but said the ceremony would not be held until official results were announced some time Sunday -- and a winner declared.

A Zimbabwean journalist told CNN there was a lot of activity at the presidential residence Saturday night. Tents went up and trucks drove in and out of the property, leading reporters to speculate that a swearing-in ceremony for Mugabe may be in the works.

Mugabe has already declared himself the winner of Friday's runoff, even though the election was strongly questioned by a group of African lawmakers who observed the polls.

Mugabe was the sole candidate in the runoff. Movement for Democratic Change leader Morgan Tsvangirai pulled out, citing violence and intimidation that he said was carried out by Mugabe's supporters.

Mugabe said he won in all parts of the capital city of Harare and many parts elsewhere. He added that he did not know what prompted the people to vote in such overwhelming numbers, unlike the March elections when the divided outcome forced the presidential race into a runoff.

Mugabe made the claims Sunday at a funeral for his wife's relative. It was broadcast on state television.

Members of the Pan-African Parliament observer mission said the election was not "free, fair and credible."

"The environment was tense, hostile and volatile," said Marwick Khumalo, a lawmaker from Swaziland. "And there was a high level of intimidation, violence, displacement of people, abduction and loss of lives."

The mission said opposition parties were not allowed to hold rallies and were shut out from broadcasting their campaign messages on state-run media.

"There was hate speech, incitement of violence and war rhetoric that instilled fear and trepidation amongst voters," Khumalo said.

Kenyan Prime Minister Raila Odinga called on the African Union to send in troops to Zimbabwe, saying the ongoing crisis in the country is a "shame and embarrassment."

Odinga, a former opposition leader who became Kenya's prime minister after a power-sharing deal following a disputed election in that country, made the comments during a visit to his home province.

He made a similar appeal during an interview with CNN earlier this month.

"The information that we have right now is that Mugabe is proceeding with impunity, completely disregarding the world opinion," he said. "And I have suggested that the United Nations should support the African Union and come up with a peacekeeping force that will be deployed in Zimbabwe so that some calmer decisions can be facilitated."

Opposition leaders and international observers have called the election a sham -- a word that President Bush also used to denounce the voting.

The Sunday results come two days after the balloting. The two-day turnaround time stands in sharp contrast to the five weeks it took the election commission to release results from the March 29 election.

Supporters of opposition candidate Tsvangirai said he had defeated longtime president Mugabe on March 29. But when results finally were reported, the Mugabe-appointed commission said Tsvangirai had won but fallen short of the 50 percent needed to avoid a runoff.

"Turn out was very low," Irene Petras, executive director of Zimbabwe Lawyers for Human Rights, told CNN Sunday. "A lot of people [were] dragged to the polling station to fill out a ballot paper."

MDC party also reported that supporters of the ruling Zimbabwe African National Union-Patriotic Front Party herded rural voters to the polls and forced them to vote. The party said about 90 of its supporters have been killed in the weeks preceding the election.

Zimbabwe's Deputy Minister of Information, Bright Matonga, said he would not "dignify the charges with comment" and said the voting process was peaceful. He also said MDC members and supporters burned down some polling stations.

Tsvangirai remained holed up for a sixth day Saturday at the Dutch embassy in the capital, Harare, party spokesman Nelson Chamisa said.

Tsvangirai, who fled there citing threats to his safety, was deciding his movements based on "security assurances," Chamisa said.

Matonga on Saturday said that the government would be willing to sit down with Tsvangirai and MDC members "as long as they are not pushing the British agenda or an American agenda."

Mugabe recently labeled the MDC a creation of the West, the state-run Herald newspaper reported.

However, Tendai Biti, MDC secretary-general, emphasized Saturday that the runoff had closed some doors in the eyes of the MDC.

"A government of national unity, as far as we're concerned, is history," he said, saying that some sort of transitional arrangement might be possible.

(Source : http://edition.cnn.com/2008/WORLD/africa/06/29/zimbabwe.sunday/)