Mehdi Karroubi, an opposition leader in Iran, has said his house was surrounded by Revolutionary Guards to prevent him from participating in al-Quds day on September 3.
His website claims that his house was attacked by a mob, which smashed windows and beat up a member of his security.
Last year opposition figures used the rally to protest against the government.
Speaking to Al Jazeera, Potkin Azar-mehr, an Iranian blogger in London who has been in touch with sources in Iran, says the attack is not the first.
Air date: September 3, 2010