The man who tried to save Neda

One of the stand-out images of the protests in Iran is of a young woman dying from gunshot wounds on the streets of Tehran.

Neda Soltan was shot while attending a protest, and the footage shows her lying on the ground in a pool of blood and two men trying to save her.

Dr Arash Hejazi, the man in the white shirt who rushed to her aid, is studying in England.

He spoke to the BBC's Rachel Harvey about the incident.