Hamosad Veaasir X

In December 2010, a dead prisoner was found in Ayalon prison. Rumors and vague reports about the existence of "Prisoner X" - an unknown person held in total isolation for unknown crimes - began to surface, but a sweeping gag order was imposed on the affair, and also on the very existence of the order. His identity remained a mystery for another two years, until an investigation by an Australian TV channel revealed that the unknown prisoner who committed suicide in his cell was an Australian citizen and a Mossad agent.