A murder investigation is under way in Italy after the death of a Moroccan model who testified against former PM Silvio Berlusconi in 2012.
Imane Fadil, 33, died on 1 March in a Milan hospital, a month after being admitted with stomach pains. At the time she said she had been poisoned.
Italian media say she may have been poisoned with a radioactive substance.
She was a key witness against Mr Berlusconi, who was accused of paying for sex with an underage prostitute.