(AGI) - Tehran, 18 Sept. - Not only in Tehran, also in other Iranian cities there have been clashes between demonstrators and the police, after the opposition had called on the people to demonstrate against the re-election of Mahmoud Ahmadinejad at the expense of the reformist Mir Hossein Moussavi in the controversial election on June 12. Eyewitnesses have reported riots in Tabriz, in the north of Iran and in Isfahan in the south. In both cases the militia of the ultra-Islamic 'Baiji' movement assisted the police in maintaining the order, beating demonstrators and arresting many of them. The official number of injured stands at two at the moment, and around ten people were reportedly arrested. Today Iran celebrated 'Quds' day, which means 'Jerusalem': each year marches are organised to support the Palestinian cause. Today is also the last Friday of Ramadan, the Muslims' holy month.