As many as 500 people may have been arrested in Isfahan , according to an opposition news agency . The protests were sparked by the arrest of a prominent reformist cleric, Mehdi Karroubi, who was released from prison on Sunday after serving 18 months for his role in organizing street protests.
As many as 500 people may have been arrested in Isfahan , according to an opposition news agency . Some videos have shown bloodied and possibly dead protesters , but the government says their forces have fired no weapons .