BBC: Tens of thousands of people have joined a rally in central Tehran to celebrate the re-election of Iran's President Mahmoud Ahmadinejad.
The president's closest opponent in the election, Mir-Hossein Mousavi, has lodged an official appeal against the result amid continuing angry protests.
Security forces have arrested up to 100 members of reformist groups, accusing them of orchestrating the violence.
Mr Ahmadinejad denied any vote-fixing, saying the result was "very accurate".
At an earlier news conference, the president accused foreign media of refusing to accept the result because they did not like it.
"Forty million people have taken part in this process. How can they question it?" he said.
US doubt
Asked about Iran's nuclear programme and Tehran's relations with foreign powers, he said the nuclear debate "belongs to the past", and that Iran had "embraced" the idea of an international effort to eliminate nuclear weapons.
Global reaction to the election has been muted, but US Vice-President Joe Biden told broadcaster NBC there was "an awful lot of doubt" about the result.
Mr Ahmadinejad's closest rival in the election campaign, Mir-Hossein Mousavi, announced on Sunday he had lodged an official appeal appeal against the result to Iran's Guardian Council.
"I urge you Iranian nation to continue your nationwide protests in a peaceful and legal way," he said in a statement.
Mr Mousavi has called several times for his supporters to avoid violence, but angry protesters have been setting light to vehicles and throwing stones in Tehran.
Reuters reported that police charged a 2,000-strong group of students who were protesting at the University of Tehran. >>> | Sunday, June 14, 2009
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