The UN and former colonial power the United Kingdom both expressed concern about the violence, in which three people were killed after troops opened fire.
The ruling ZANU-PF party has won two thirds of the seats and will dominate the assembly - as they have done since the country's independence from Britain in 1980.
The opposition leader Nelson Chamisa's Movement for Democratic Change (MDC) had won 41 seats.
Zimbabwean president Emmerson Mnangagwa said on Thursday he had been in touch with opposition leader Nelson Chamisa (MDC Alliance) to find a solution around the protests that claimed lives in Harare on Wednesday.
For supporters of Zimbabwe's opposition MDC Alliance party, this was a day they had been dreading - the moment their dream of election victory was crushed. Several streets were still strewn with rocks and the charred remains of fires. Some journalists also were attacked.
Automatic gunfire has been heard all afternoon as troops attempt to disperse protestors. "They are there to assist the police".
Three people were killed, state broadcaster ZBC said.
But the MDC earlier accused the election commission of deliberately delaying results in favour of the ruling party.
Armored vehicles have appeared on the streets in Harare.
Biti revealed the opposition had written to the electoral body asking them to produce the V11 forms.
"You can't rig our election.this is a military government", the crowd shouted. "People were happy on Monday. We are not going to rest".
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Authorities invoked Zimbabwe's Public Order and Security Act, which allows police to ban public meetings or gatherings. The police can also ask the military for help in cases of public disturbances.
He said: "The force used today was clearly disproportionate and unjustifiable. Are we at war?"
Police patrol outside the Zimbabwe Electoral Commission offices as opposition supporters gather, in Harare, Zimbabwe, on August 1, 2018.
Western and other election observers gave their first assessments of Monday's peaceful election and whether it was free and fair.
The EU's Chief Observer, Elmar Brok, said he did not yet know if the shortcomings would have a material effect on the outcome of the vote, and he criticised the Zimbabwe Electoral Commission (ZEC) for being at times "one-sided".
The opposition alleges the elections have irregularities, saying voting results were not posted outside one-fifth of polling stations as required by law. "If President Chamisa wins this election then the people of Zimbabwe will have their government", stated Nkululeko Sibanda, the MDC spokesman.
"The longer it lasts that the results of the presidential election is not known, the more lack of credibility it provides", he said.
The Zimbabwe Electoral Commission is by law given up to five days to release the results.
The results of the presidential election, which is a separate contest pitting Mr Mnangagwa against Mr Chamisa, are yet to be declared, but the parliamentary results bode well for the incumbent.
The most important thing for us now is to move beyond yesterday's tragic events, and to move forward, together.They, alongside the families of the victims, are in my thoughts and prayers at this hard time.
But the violence in Harare seemed to put those aspirations on hold.