Huge things happening:

The report said the seven died in shooting that erupted after several people in the west of the capital “tried to attack a military location” on Monday evening.
More than 100,000 opponents of President Mahmoud Ahmadinejad had earlier marched through Tehran protesting at alleged vote rigging in last week’s elections.The outpouring on to the streets was the greatest display of popular feeling since the Islamic revolution in 1979.
The state radio report was the first official confirmation of the shooting in Tehran’s Azadi Square. Witnesses saw at least one person shot dead and several others seriously wounded after shooting from a compound for volunteer militia linked to Iran’s powerful Revolutionary Guard.
To cries of “death to the dictator”, Iranians had protested against President Ahmadinejad’s proclaimed re-election.
The rally, larger than anything seen in the capital since the demonstrations that toppled Shah Reza Pahlavi 30 years ago, openly defied the authorities. The interior ministry had banned the rally and warned protesters that live ammunition could be used against them.

Times of London says eight are dead.

Iran was braced for more rallies today – and possible violence – after hardline paramilitaries killed eight protesters yesterday in the aftermath of a huge rally against the disputed presidential election result.
State radio said at least seven people were killed when “thugs” attacked and vandalised government buildings at the end of the rally, which had been banned.
“A military post was attacked with the intention of looting its weapons. Unfortunately, seven of our citizens were killed and a number of them injured,” it said.
Another demonstrator was shot in the head outside a local base of the Basij Islamic volunteer militia, which was set on fire.
President Mahmoud Ahmadinejad left Iran overnight to attend an international security summit in Russia, as his regime attempted to halt the momentum of the reformist movement who are challenging Friday’s result, which saw the fundamentalist leader re-elected by a wide margin.
The Iranian leader flew to the Russian city of Yekaterinburg today to meet President Dmitry Medvedev at a summit of the Shanghai Cooperation Organisation of Central Asian powers. Mr Ahmadinejad had postponed the trip for one day because of the street protests.
More rallies are planned today in the tinderbox of Tehran, providing a possible flashpoint for rival demonstrators.