For almost two weeks, Iran has seen protests over its disputed presidential election, with opposition supporters demanding a rerun of the vote they say was rigged.

A spokesman for Iran's powerful Guardian Council has said there was no fraud in the election, and President Mahmoud Ahmadinejad was clearly re-elected.

However, opposition supporters have said they will continue their protests.

They plan to release thousands of balloons emblazoned with the name 'Neda'.

Neda Agha-Soltan has become a martyr figure since she was shot dead at a protest earlier in the week.

The Iranian security forces have not admitted responsibility for her death, which was captured on film.

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

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First broadcast 25 June 2009

