Iran authorities accused of covering up protesters deaths

It was the death of a young woman being detained by the morality police which sparked the unrest currently gripping Iran.

Three weeks on, and details have emerged of another schoolgirl who has died after taking part in protests for women’s rights.

Human rights groups say the 16-year-old was beaten to death by the security forces.

But the Iranian authorities say the girl fell from a building  – the explanation they also used for the death of another teenage girl.