Egyptians wrapped up their presidential run-off vote on Sunday with a seemingly moderate turnout.

Sunday's voting was extended two hours to end at 10 p.m. (2000 GMT). Some polling stations saw many voters by Sunday evening.

The two-day fierce run-off was between Muslim Brotherhood's Mohamed Morsi and former prime minister Ahmed Shafiq. No one could predict who the winner will be until the counting of votes were completed.

Prime Minister Kamal el-Ganzouri went to some polling stations and urged citizens to vote. Senior military officials also inspected some areas.

The results will be officially announced on Thursday by the electoral commission. But the results may be known unofficially as early as Monday because of the distribution of observers of the two candidates in polling stations across the country.

The run-off came just two days after the Supreme Constitutional Court voided the Islamists-dominated People's Assembly (lower house of parliament) as the parliament election law was unconstitutional. The same court also ruled the political isolation law targeting former regime officials unconstitutional, ending the debate over Shafiq's qualification.

The new president will assume office without a new constitution and parliament. The Supreme Council of the Armed Forces (SCAF) reportedly will issue a supplementary constitutional declaration to make arrangements for the coming period.

The ruling military council took over power in February 2011, after Hosni Mubarak was forced to resign under pressure of 18 days of mass protests against his 29-year rule. The constitution was suspended and the parliament was dissolved shortly after Mubarak's fall.

From last November to February, Egyptians elected two houses of the parliament. Islamist parties occupied more than 70 percent of the seats in both chambers.