https://www.bbc.com/news/world-europe-47667129
Imane Fadil death: No radioactivity in 'bunga bunga' model
Initial tests on Imane Fadil, a 33-year-old Moroccan model who died in hospital in Milan, appear to have ruled out claims that she suffered from radioactive poisoning.
Investigators are trying to find out what led to the model's death, after prosecutors said there were "several anomalies" in her records.
Ms Fadil was a key witness in the trial of ex-Prime Minister Silvio Berlusconi.
She gave evidence in 2012 about his "bunga bunga" parties near Milan.
Mr Berlusconi, 82, was eventually cleared of paying for sex with an underage prostitute, but convicted of tax fraud.
He said at the weekend he had never met or talked to Ms Fadil and said "what I read of her statements made me think that everything was invented, absurd".