Mohammed al-Attar was convicted of being an agent for the Israeli intelligence agency Mossad.
The 31-year-old had confessed to the charge, but later said the admission had been extracted under torture by Egypt's intelligence services.
Three Israeli defendants who were being tried in absentia on related charges were also convicted.
Like Attar, the trio were handed 15 year sentences and a fine of 10,000 Egyptian pounds ($1,700;
Last Mod: 21 Nisan 2007, 13:30