Tehran, 21 June-(ANA)-At least 10 people have been killed as police clashed with "terrorists" in Tehran on Saturday, state TV says.
It said "rioters" set two petrol stations and a mosque on fire and attacked a military post, during protests over disputed elections.
Five family members of one of Iran's most powerful figures, Akbar Hashemi Rafsanjani, were arrested during the protest, state media also say.
He is seen as a key rival to poll winner President Mahmoud Ahmadinejad.
The reports cannot be verified as foreign media in Iran are being severely restricted.
The state TV report said 10 people had been killed and more than 100 wounded in clashes between police and "terrorist groups" in Tehran. It said "rioters" had set two gas stations on fire and attacked a military post.
Earlier it said an unspecified number of people had died when "rioters" set a mosque on fire. But later reports said there had been no deaths at the mosque. A correction was also issued reducing the overall death toll to 10 from 13. (ANA)