Fears over health of Iran opposition leader

Fresh concerns have been raised about the health of Iranian opposition leader Mehdi Karroubi, under house arrest since 2010.

Mr Karroubi's son said he was taken to hospital three times recently due to heart and lung problems.

Mehdi Karroubi, 76, was detained after anti-government street protests. He has not been formally charged.

Mr Karroubi lost to Mahmoud Ahmadinejad in presidential elections in 2009, according to the disputed results.

Another candidate in the election, the main opposition leader Mir Hossein Mousavi, 71, is also under house arrest.

Mohammad Taghi Karroubi voiced alarm over his father's health on Thursday after two photographs surfaced on progovernment websites showing Mehdi Karroubi at a beach.

The pictures emerged after Mohammad Karroubi had earlier said his father had been taken to hospital without any family present.