Anoosheh Ashoori, 66, a retired engineer who was jailed after he was found guilty of "spying for Israel", made the allegations in a secretly recorded audio diary in which he describes dire conditions in Evin prison in Tehran. During the course of the diary, Mr Ashoori says several of his fellow inmates were displaying coronavirus symptoms. In reference to any prisoner taken to the facility's medical centre, he said: "He does not return. Nobody knows any more about his fate.”