A supporter of the challenger Mir Hossein Mousavi walks past a burning police motorcyle in Tehran as protesters took to the streets in anger over the announcement that President Ahmadinejad had prevailed in the elections.
Bloodied
A Mousavi supporter leaves the site of a skirmish.
A protester bends to pick up a stone on Valiasr Street.
Police and security forces block the street in front of the Interior ministry
A Mousavi supporter speaks with riot police
Supporters of Mousavi grapple with a riot policeman
Supporters of Mousavi protest
Iran is ruled under a system called Velayat-e Faqih
Walk Off
A supporter holds a portrait of Mousavi at a campaign rally in Tehran.