Supporters of Hassan Rohani also shouted slogans in supportof detained opposition leader Mirhossein Mousavi at the rally inTehran, according to a video of the event posted on YouTube.
Rohani's criticism could be seen as potentially inflammatorybefore the June 14 election which authorities hope to tightlycontrol, eager to prevent a repeat of the mass protests afterthe 2009 poll.
Those protests by the opposition "Green Movement" againstwhat they saw as a fraudulent win for conservative PresidentMahmoud Ahmadinejad were crushed by security forces.
Mousavi, his wife, and fellow reformist Mehdi Karoubi havebeen under house arrest for over two years. Many activists havebeen jailed or have left Iran.