There's more unrest in Tehran as Iranian President Mahmoud Ahmadinejad rejects criticism of his disputed re-election

Iran's defeated presidential candidate Mirhossein Moussa-Vi has called for Friday's presidential election results to be cancelled, amidst new street protests in Tehran. In a statement he said he was formally appealing against official election results which gave President Mahmoud Ahmadinejad 63% of the votes. He also called on his supporters to keep up peaceful protests. At the same time President Ahmadinejad rejected any criticism of the voting process as he addressed his followers in central Tehran.