Nasserist candidate Hamdeen Sabbahi will file an appeal for Egypt's presidential election to be suspended because of alleged voting irregularities and a pending case over the right of former Prime Minister Ahmed Shafiq to run in the presidential race, Essam El-Islamboly Sabbahi's lawyer said on Saturday.

"We will present an appeal on behalf of candidate Hamdeen Sabbahi to the presidential electoral committee, citing a series of irregularities that have affected the outcome of the first round," El-Islamboly told Reuters.

Votes were being counted on Thursday night and Friday. Nasserist  candidate Hamdeen Sabbahi, who ran on a pro-revolutionary platform, fought an impressive electoral rearguard action, finishing a not-so-distant third with 21.6 per cent of the votes. Though he came second place at a certain point while votes were being counted, he eventually came third when last Mubarak-era prime minister Ahmed Shafiq came second with 23.7 percent.

Muslim Brotherhood presidential candidate Mohamed Morsi took first place with 25.3 per cent.

The final results are expected to be made official on Tuesday.