Son's plea for father jailed in Iran
Four years ago Kamal Foroughi was working in Tehran as a consultant when he was arrested and thrown in jail, accused of spying.
Now 76, the British-Iranian dual national is serving out an eight year sentence at the notorious Evin prison.
Not wanting to make his situation worse, Mr Foroughi's family stayed silent, but now they worry his health is deteriorating and have decided to speak out.
His son, Kamran, told BBC Breakfast that the family still could not understand why he was being held and wanted the Iranians to release him so he could return home to the UK.
15 Oct 2015