A U.N. police officer from Nepal patrols inside the Haitian vote tabulation center as electoral employees count ballots in Port-au-Prince. (Photo: AP Photo/Dieu Nalio Chery)

Haiti has postponed the announcement of preliminary results of their presidential election because of alleged voter fraud.

Gaillot Dorsinvil, president of Haiti's Provisional Electoral Council, said that officials found a "high level" of fraud and irregularities at the tabulation center in the capital city of Port-au-Prince, according to The Associated Press. As a result, lawyers are now adopting "more stringent verification measures," which will result in a delay in counting. He did not describe the alleged problems.

The preliminary results are now expected to be announced on April 4 instead of March 31, the originally scheduled date.

Voters went to the polls on March 20 to choose between two candidates--Michel "Sweet Micky" Martelly, a 50-year-old musician who has never held public office, and former first lady and senator Mirlande Manigat, 70.

Final results are due April 16.