Riot police are also reportedly using water cannons to disperse groups of protesters, and two Iranian news agencies are currently reporting that a suicide bomber blew himself up inside of a shrine dedicated to Ayatollah Ruhollah Khomeini, killing himself and injuring eight others, though as Reuters reports, "foreign media are subject to Iranian restrictions on their ability to report, film or take pictures in Tehran," so the reports can not be confirmed, and, as BBC's Jon Leyne, who is currently reporting from Tehran, notes, "There was no evidence to support the report."
Interestingly enough, CNN, the network lambasted by Twitter users, who came up with the hashtag #CNNFail to criticize the network for their failure to cover the election fallout in Iran last week, has been covering today's protests all morning, desperately trying to get any information they can—most of it coming from Twitter and Facebook. The restrictions on foreign media are quite evident in CNN's coverage- the network is also showing the current coverage by Iran's state-run media, which is currently showing very little (if anything) about the riots in the streets.
The restrictions on foreign media have made it quite difficult to confirm what, exactly, is happening in Iran, yet social networking sources have provided a small window into a situation that is essentially being hidden from the world through a media lock down. There is one thing that all sources seem to agree on: the chants in the streets—"Death to the Dictator" and "Death to the Dictatorship."
Witnesses Report Fierce Clashes On Tehran Streets [AP]
Iran Police Beat Protestors, Fire Tear Gas [MSNBC]
Iran Security Forces Use Tear Gas, Clubs On Protesters, Witnesses Say [CNN]
Iran Police Disperse Protesters [BBC]
Suicide Bomber Attacks Khomeini Shrine In Iran [Reuters]