Neda Agha-Soltan was shot on an open street in Tehran June 20, and her death became symbolic of the protest movement in Iran and also prompted a wave of international protest after internet images of the 27-year-old's death were shown around the world.

Witnesses said opposition leader and defeated candidate Mir-Hossein Moussavi was prevented from getting out of his car when it arrived at Behesht-e Zahra cemetery for the mourning ceremony, which in the Shiite Muslim tradition went ahead 40 days after Agha-Soltan's death.

Thousands also gathered at Mosalla square in central Tehran and in the city of Isfahan to mourn and protest against Ahmadinejad's government.

Official figures have put the number killed in recent demonstrations at 20, although a member of parliament later stated that the number was 30.