HARARE-- Zimbabwe's Constitutional Court on Wednesday began hearing a petition by the country's main opposition party, the MDC Alliance, challenging the outcome of the July 30 presidential election.

MDC Alliance leader Nelson Chamisa petitioned the court, claiming that the Zimbabwe Electoral Commission (ZEC) falsified the results in favour of incumbent President Emmerson Mnangagwa who was declared the winner with 50.8 per cent of the vote.

Chamisa came second with 44.3 per cent of the vote, but claimed in the petition to have won. He wants the court to set aside the results as announced and instead declare him the winner or alternatively order a re-run.

The full bench of the Constitutional Court is hearing the matter.

President Mnangagwa, who is cited as the first respondent in the petition, is opposing the application by Chamisa, arguing that the poll was conducted in a free and fair environment, with the outcome reflecting the will of the people of Zimbabwe.

He wants Chamisa's petition to be dismissed and the court to uphold ZEC's declaration that he won the election.

President Mnangagwa's lead lawyer, Advocate Lewis Uriri has said they were confident of winning the case as the opposition did not have evidence to back their claims.

We are more than confident they do not have a case. It is simply political rhetoric packaged in an affidavit and then you have unfounded mathematical extrapolations, there is no direct evidence of poll manipulation, he said when the legal team filed opposing papers earlier.