TEHRAN - Iran's opposition will go ahead with a planned rally on Saturday in Tehran despite a government warning against new protests, an aide to defeated presidential candidate Mehdi Karroubi said.
"I have not heard anything indicating that the rally has been cancelled," he said on condition of anonymity.
The rally will be held at 4:00 pm (1130 GMT) at Tehran's Enghelab square as announced before by Karroubi, he said.
The demonstration is being organised by Karroubi supporters and a reformist group, the Combattant Clerics Assembly.
The plan to hold the rally comes despite Iran's supreme leader Ayatollah Ali Khamenei warning the opposition groups against holding street protests.
Tehran has witnessed daily demonstrations since the disputed re-election of President Mahmoud Ahmadinejad last week drew claims from his rival Mir Hossein Mousavi of massive vote fraud.
Despite assurances by top officials that Washington would not inject itself into the crisis, both houses of the US Congress voted to condemn violence against rioters by the government of Iran.
A House resolution expressed "its support for all Iranian citizens who embrace the values of freedom, human rights, civil liberties, and rule of law."
US President Barack Obama warned Iran Friday that the "world is watching" its actions, and said the United States stood with those seeking "peaceful" justice in the post-election tumult.
"I'm very concerned based on some of the tenor -- and tone of the statements that have been made -- that the government of Iran recognize that the world is watching," Obama said in an interview with CBS News.
"And how they approach and deal with people who are, through peaceful means, trying to be heard will, I think, send a pretty clear signal to the international community about what Iran
Asked whether he had a message to the demonstrators, Obama replied "I absolutely do.
"We stand behind those who are seeking justice in a peaceful way.
"We stand with those who would look to peaceful resolution of conflict and we believe that the voices of people have to be heard, that's a universal value that the American people stand for and this administration stands for."
Asked about the more vociferous criticisms of Iran by European powers, including France, an official said that those US allies did not have the same kind of tortured relationship with Iran that Washington did.