The Zimbabwe Electoral Commission says it will conduct a full recount of the presidential and parliamentary voting on April 19, the Zimbabwean state-run Sunday Mail newspaper reports.
Commission chairman George Chiweshe says President Robert Mugabe's party had demanded a recount.
Independent tallies indicate Mr Mugabe lost, but garnered enough votes to force a run-off. Opposition leader Morgan Tsvangirai says he won outright.
Mr Tsvangirai is meanwhile attending a regional leaders' meeting in Zambia to discuss the deepening crisis over the country's contentious elections.
Mr Mugabe has stayed away from the meeting.