Iranian state media report Iran's Guardian Council is prepared to
recount disputed ballot boxes from Friday's presidential election.
Tuesday's news of a partial recount follows three days of sometimes violent demonstrations in Tehran, as protesters denounce what they say is President Mahmoud Ahmadinejad's fraudulent election victory.
Iran's supreme leader, Ayatollah Ali Khamenei, had asked the powerful Guardian Council of Islamic clerics to investigate allegations of voter fraud.
But defeated reformist presidential candidate Mir Hossein Mousavi issued an even broader appeal -- he urged the Council to cancel the election results.
Mr. Ahmadinejad says the election was free and fair.
Demonstrators from both the pro-Ahmadinejad and the pro-opposition camps are planning to hold rallies in the same square in Tehran on Tuesday.
An aide to Mr. Mousavi says the former prime minister is urging his supporters not to attend in a bid to avoid any violence, adding that he will not attend either.
The pro-Ahmadinejad rally is set to begin at least one hour before the pro-opposition gathering.
Iranian officials have placed restrictions of foreign media ahead of the rallies.
Iranian state television said at least seven people were killed Monday near the site of a massive pro-opposition rally in Tehran when demonstrators allegedly tried to attack a military post.