Morocco described the comments as an attempt to "alter the religious fundamentals of the kingdom", and accused Tehran of attempting to spread Shia Islam.

A report by Geoffrey Robertson QC accused Tehran of continuing to deny relatives of the victims their right to know where their loved ones are buried.

Washington has accused Tehran of building nuclear weapons and has imposed sanctions against the country.

Earlier this week, Mr. Bush accused Tehran of producing sophisticated roadside bombs that are being used against both Iraqi and American troops.

The government accused Tehran of orchestrating the protests.

Argentine justice accused Tehran in 2006 of being behind the attacks, allegedly because of Buenos Aires' decision to suspend a nuclear material delivery and technology transfer.

The US and its allies accuse Tehran of seeking to develop a nuclear weapon.

In 2011, Senegal cut ties with Iran, accusing Tehran of supplying separatist rebels in the Casamance region with weapons.

Over the last three years, Washington has blocked Iran's membership, accusing Tehran of supporting Hezbollah militants and building nuclear weapons.

Washington has accused Tehran of using a civilian nuclear program as cover for efforts to develop atomic weapons.