Mordechai Vanunu disappeared from a London hotel on 30 September
It was later confirmed Mordechai Vanunu had been befriended in London by an American Mossad agent, Cheryl Bentov, who was masquerading as an American tourist.
She lured him to Rome with her on holiday on 30 September. Once there he was kidnapped and drugged and returned to Israel on a freighter.
The details were revealed by Mr Vanunu himself, who wrote them on the palm of his hand which he held up against the window of a van while being transported from prison so waiting journalists could get the information.
The Sunday Times article based on an interview with Mr Vanunu contained the most substantive evidence at the time of Israel's nuclear weapons programme. It led the international community to revise sharply upwards the number of weapons it believed Israel held in its stockpile.
Mr Vanunu was subsequently put on trial in March 1987 on charges of treason and espionage and sentenced to 18 years in prison. Eleven of those were spent in solitary confinement.
He was freed on 21 April 2004 and has since been refused permission to leave Israel.