HARARE, Zimbabwe — Zimbabwe’s main opposition party filed a legal challenge Friday to the results of the country’s first election without Robert Mugabe on the ballot, alleging irregularities and calling for a fresh vote or for its candidate, Nelson Chamisa, to be declared the winner.

The filing brings more uncertainty to a country that had hoped the peaceful vote would begin a new era but has been rocked by scenes of military in the streets and opposition supporters harassed and beaten.

The court now has 14 days to rule, and the inauguration is on hold until then.

Lawyers for the Movement for Democratic Change party challenged results showing that President Emmerson Mnangagwa won 50.8 percent of the vote July 30 and Chamisa received 44.3 percent.