By Mirwais Harooni
KABUL (Reuters) - Preliminary results from Afghanistan's presidential election, due to be announced on Wednesday, have been delayed, an election official said, amid accusations of fraud that threaten to split the fragile country along ethnic lines.
Votes from around 2,000 polling stations in the June 14 run-off are to be reviewed and recounted, said Sharifa Zurmati Wardak of the Independent Election Commission (IEC).
The contest pitted former foreign minister Abdullah Abdullah against former World Bank economist Ashraf Ghani.
"This will take nearly a week and the final result won’t be announced on time," Wardak told Reuters.
A senior U.N. official said the delay was intended to take account of allegations by Abdullah that his rival engaged in mass vote rigging.
Ghani's aides, citing election observers, say he is in the lead in the run-off by one million votes. But official figures have not been released.
The election was intended to mark the first democratic transfer of power in Afghan history, a crucial step towards stability as NATO prepares to withdraw the bulk of its troops by the end of the year.
Now the U.N. fears the standoff between Abdullah, who draws his support from the minority Tajik community, and Ghani, a member of the Pashtun majority, could inflame long simmering ethnic tensions. The Pashtun are Afghanistan's largest ethnic group and the Tajiks the second largest.
Abdullah has accused President Hamid Karazai, an ethnic Pashtun, of collusion in the alleged rigging. Last week, thousands of Abdullah supporters marched on the presidential palace.
Abdullah's campaign has also released audio recordings purporting to show senior officials discussing stuffing ballot boxes. His aides say that turnout for the run-off in some Pashtun areas was three times higher than in the first round.
On Tuesday, both candidates met U.N. officials and Western diplomats who are trying to help resolve the deadlock.
"The meetings provided an opportunity to engage in discussions about election-related issues and the way forward," a U.N. statement said.
Diplomats hope the delay will help the two sides to agree on the appointment of new electoral officials, following the resignation of the head of the commission's secretariat over fraud claims.
After the meeting, Ghani’s aides denounced delays in the count.
"The IEC results should be announced, so that the nation can move on to the adjudication of complaints," they said in a statement.
"Altering the rules of the game, which all participants agreed to beforehand, in the middle of the process, will cause that process to have less legitimacy. People must keep their promises."
Karzai's successor faces a spike in violence as foreign troops draw down, a brewing financial crisis and donors tired of rampant corruption.
The most pressing issue for the new president may be signing a bilateral deal with Washington to allow a small contingent of U.S. troops to stay beyond 2014 for training and counter-terrorism operations.
Karzai has refused to sign, but both Abdullah and Ghani have promised to sign promptly if elected.
(Additional reporting by Jessica Donati; Writing by Katharine Houreld; Editing by Ron Popeski)