Clashes reported in Iran protests

Iran's security forces fired teargas and clashed with opposition supporters in central Tehran, where demonstrators were rallying to demand the release of two opposition leaders, according to witnesses and an opposition website.

"Security forces and people in civilian clothes clashed with demonstrators in Tehran to disperse them," opposition website Kaleme reported about Tuesday's events.

Kaleme.com said protesters rallied at several points in the capital, chanting "death to the dictator" and calling on authorities to free Mir Hossein Mousavi and Mahdi Karroubi.

Former presidential candidates Mousavi and Karoubi have not been seen in public since they called for a rally on February 14, during which thousands of their supporters took to the streets to support uprisings in the Arab world.

Family members and opposition activists say the two leaders have moved from house arrest to a Tehran prison along with their wives. Iranian authorities deny the reports.