Liberian election officials have opened hearings into electoral fraud claims by presidential candidate George Weah, who trails by a large margin in the country's run-off vote.

Mr. Weah has alleged there was cheating, including pre-marked ballots, in last week's second round election pitting him against former Finance Minister Ellen Johnson-Sirleaf.

He has called for a re-run of the poll.

A final vote count earlier this week showed Mrs. Johnson-Sirleaf won 59 percent of the vote to 41 percent for Mr. Weah, a former soccer (football) star.

Election officials said the results are considered preliminary until an investigation is completed into Mr. Weah's allegations.

International observers say there was no evidence of widespread fraud. And leaders from several African countries praised the run-off as peaceful, transparent, free and fair.

Final results are expected next week.

Some information for this report provided by AFP and Reuters.