PJM’s Ardeshir Arian, who has been following developments closely by phone and on the Internet, reports that unrest sparked by government gas rationing continued all night. The rioting, mainly in Tehran, but also in other cities, spread beyond the gas stations to government banks and government-run supermarkets, which were ransacked by ordinary people. It took hours for security forces to gain control and some forces fled the scene to safety.
UPDATE: The Baztab news site claims that reporters with cameras in hand covering the unrest were attacked. This took place out of fear that security forces were photographing protesters in order to identify and arrest them.
This news site, headquartered in Tehran, is citing foreign sources - including BBC and Radio Farda (US Persian-language Radio) as reporting that three people were killed in the unrest. Some reports on websites indicate that arrests were made by the IRI agents.
I find it difficult to believe that a country with so much oil beneath it would have to resort to rationing petroleum products. I mean, that makes about as much sense as a famine in a bread-basket.