Zimbabwe's opposition party, the Citizens Coalition for Change (CCC), has called for fresh elections after declaring that last week's general election was fraudulent.

Deputy CCC spokesperson, Ostallos Siziba, told journalists that his party would lobby the African Union and the regional body Sadc to pressure the governing Zanu-PF to hold new elections and disband the electoral commission.

He would not be drawn to revealing whether his party would take the legal route to challenge the results.

He said CCC would "employ all the measures at the right time".

Party leader Nelson Chamisa won 44% of the vote, but he insists those results were false.

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However, some regional leaders, including South African President Cyril Ramaphosa, have congratulated President Emmerson Mnangagwa on his win, despite Sadc election observers' preliminary assessment saying that the elections fell short of the accepted democratic standards.