(ANSA) - Milan, March 15 - A Moroccan-origin model who was a key prosecution witness in the 'Ruby' underage prostitute trials involving ex-premier Silvio Berlusconi has died after claiming to have been poisoned.
    A murder probe has been opened, police said.
    They said she had died after a "month of agony".
    She was awake until the end despite progressive organ failure. Imane Fadil, 34, died March 1 at the Humanitas Clinic at Rozzano near Milan where she had been admitted at the end of January.
    She told her relatives and lawyer that she was afraid she had been poisoned.
    Berlusconi was cleared of paying for sex with an underage prostitute after judges said he did not know Ruby was a minor.
    He has since been embroiled in cases of allegedly bribing witnesses to lie about the real nature of his bunga bunga sex parties.