Warning: This story contains details which some readers might find distressing.
An Iranian woman who witnessed the bloody crackdown on protests in Iran has described how her neighbourhood turned into a "war zone" as security forces opened fire at crowds with live ammunition.
A government-imposed internet blackout in Iran, now in its third week, has prevented many accounts of what has happened from reaching the wider world.
But some Iranians who have left the country have been able to share what they have seen.
Parnia, who lives in London, told the BBC that she was visiting her family in the central city of Isfahan when the protests broke out in the capital, Tehran. They quickly spread across the country, and within days there were hundreds of protesters in the Hakim Nezami and Khaghani neighbourhoods of Isfahan.
