9:00 am ET Reports that Mousavi has broken house arrest and joined protesters
Iran Green Voice reports of people being attacked by plain clothes police. And, reports of police wielding batons and shooting tear gas into the air have been reported by mardomak.org

Iran Green Voice has unconfirmed reports that Mousavi has broken house arrest and joined protesters.

@madyar reports of clashes between protesters and riot police forces near 16 Azar Ave, under College Bridge in Tehran.

"Protestors are chanting "Ya Hossein, Mir Hossein" around Enqelab sq" via