Iran has rounded up at least 10 reformist leaders, a party member said, after President Mahmoud Ahmadinejad's re-election in a deeply-disputed vote sparked riots across Tehran.

Ahmadinejad appeared on television on Saturday to declare his landslide victory over moderate challenger Mir Hossein Mousavi was 'fair' after thousands of angry opposition supporters took to the streets in protest at alleged vote-rigging.