Iranian opposition leader Mir Hossein Mousavi has called for the trial of those he claimed “committed fraud” in last year’s presidential election.
He made the demand in a statement issued on the anniversary of violent protests that followed the vote.
Mr Mousavi also said the police and the military should stay out of politics. He demanded an independent judiciary.
Last week, he urged his supporters not to take to the streets to mark the anniversary to avoid bloodshed.
Scores of people were killed and thousands arrested during the violence that followed the controversial re-election of President Mahmoud Ahmadinejad on 12 June 2009.
“A fair trial of those who committed the election fraud, tortured and killed protesters must be held,” Mr Mousavi said in the statement released on his website Kaleme.com.
Mr Mousavi also announced a “new charter” of policy aims for the opposition movement.