Iran arrests documentary film-makers
Several Iranian film-makers have been arrested in Iran since BBC Persian TV aired a documentary about the country's Supreme Leader, Ayatollah Ali Khamenei, on 17 September.
The authorities accuse them of collaborating with the channel, which is banned in Iran.
But the BBC says no-one works for the outlet inside Iran either formally or informally, and that those arrested are independent film-makers - although films made by them have appeared on the channel.
Karen Zarindast reports.