Tehran mass protest keeps pressure on regime over poll result
The rally came as electoral watchdog, the Guardians Council, said it was investigating a total of 646 complaints of irregularities in the conduct of the poll from Mousavi and the other two defeated candidates.
It said it had invited the trio to set out their grievances tomorrow, with a decision on Sunday about any possible recount in the June 12 election which returned hardline incumbent President Mahmoud Ahmadinejad to power.