Freed French researcher details trying Iran jail conditions

French social sciences researcher Roland Marchal, 64, who was released by Iran in a prisoner exchange last month after spending nine months in jail on spying charges, has described the harsh conditions of isolation he was held in after his arrest and that of fellow researcher Fariba Adelkhah, who remains in a Tehran prison.

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Roland Marchal, the French researcher freed last month after more than nine months imprisoned in Iran, has detailed the conditions of his confinement when, he said, only the occasional book, odd visit or exchanges with other inmates allowed him to 'hold on', reports FRANCE 24.