Chairman of the opposition Movement for Democratic Change (MDC) Morgan Komichi told the media that the party leadership would meet to consider the next steps.
Zimbabwe's President Emmerson Mnangagwa has called for peace and unity on his Twitter account.
The general elections in Zimbabwe were held on July 30. Residents of the country chose the president and members of both houses of parliament.
READ MORE: Zimbabwe Electoral Commission Declares Victory of Incumbent President Mnangagwa
Riots and protests with shooting have begun in Harare amid the announcement of the election results in the parliament. To disperse the protesters, Zimbabwe police used tear gas and water cannons, as well as the military equipment. As a result of clashes between police and protesters, six people were killed and 14 others were injured.