Egypt's opposition called Sunday for an investigation into allegations of vote fraud in the referendum on a deeply divisive Islamist-backed constitution after the Muslim Brotherhood, the main group backing the charter, claimed it passed with a 64 percent "yes" vote.
Egypt's opposition alliance urged supporters on Wednesday to vote "no" in the referendum on a disputed constitution rather than boycotting it, hours after the Islamist government forged ahead by starting overseas voting in diplomatic missions for expatriates.
