The doctor who tried to save an Iranian protester as she bled to death on a street in Tehran has told the BBC of her final moments.

Dr Arash Hejazi, who is studying at a university in the south of England, said he ran to Neda Agha-Soltan's aid after seeing she had been shot in the chest.

Despite his attempts to stop the bleeding she died in less than a minute, he said.

Dr Hejazi says he posted the video of Ms Soltan's death on the internet and images of her have become a rallying point for Iranian opposition supporters around the world.

He also told how passers-by then seized an armed Basij militia volunteer who appeared to admit shooting Ms Soltan.

Dr Hejazi said he had not slept for three nights following the incident, but he wanted to speak out so that her death was not in vain.

He doubted that he would be able to return to Iran after talking openly about Ms Soltan's killing.

Neda Agha-Soltan
Neda Agha-Soltan was shot in the chest

"I was there with some friends because we had heard that there were some protests and we decided to go and take a look," he said.

"Anti-riot police were coming by motorcycles towards the crowd."

Dr Hejazi said he saw Ms Soltan, who he did not know, with an older man who he thought was her father but later on learned was her music teacher.

"Suddenly everything turned crazy. The police threw teargas and the motorcycles started rushing towards the crowd. We ran to an intersection and people were just standing. They didn't know what to do.

"We heard a gunshot. Neda was standing one metre away from me. I turned back and I saw blood gushing out of Neda's chest.

"She was in a shocked situation, just looking at her chest. The she lost her control.

"We ran to her and lay her on the ground. I saw the bullet wound just below the neck with blood gushing out.

"I have never seen such a thing because the bullet, it seemed to have blasted inside her chest, and later on, blood exiting from her mouth and nose.

"I had the impression that it had hit the lung as well. Her blood was draini