July 22, 2009 - 13:16 AMT
Rally dispersed in Tehran again
Iranian riot police clashed with hundreds of pro-reform protesters in central Tehran on Tuesday and detained dozens of them, a witness said, in the latest unrest over last month's disputed election.

The witness said demonstrators were chanting slogans against President Mahmoud Ahmadinejad and the government, including: "Ahmadinejad - resign, resign" and "Death to dictators."

The witness said police beat protesters who had gathered in Tehran's Haft-e Tir square in defiance of a ban on such demonstrations following the June 12 election, which the opposition says was rigged in favor of Ahmadinejad.

"Riot police are taking dozens of protesters into their cars and they are taking them away," the witness said. "There are hundreds of riot police and plainclothes (security forces), beating people who gathered to support opposition leader Mirhossein Mousavi."

The clash erupted four days after similar confrontations between police and protesters for the first time in weeks on Friday after former President Akbar Hashemi Rafsanjani declared the Islamic Republic in crisis and said there were doubts about the election result.

The authorities reject opposition charges of vote rigging.

The election stirred the most striking display of internal unrest in Iran, the world's fifth biggest oil exporter, since the 1979 revolution and exposed deep rifts in its ruling elite.

At least 20 people died in post-election violence last month. Mousavi and the authorities blame each other for the bloodshed. Riot police and religious Basij militia eventually suppressed June's protests, but Mousavi has remained defiant, Reuters reported.