Prosecutors admitted that one of the prosecutors of Hollywood producer Harvey Weinstein was told by the police to delete all files from her phone that she wanted to keep private.
Assistant District Attorney Joan Iluci-Orbon said the complainant had been told by a detective “to delete everything she did not want anyone to see”.
Harvey Weinstein’s lawyer said the development was “undermining” the case.
He faces charges of alleged attacks on two women. The Hollywood producer denies the allegations.
Joan Illucci-Orbon wrote in a letter to Harvey Weinstein’s lawyer, Ben Brafman: “My office had asked applicant 2 to produce any and all mobile phones that she may have used during her interaction with the defendant.”
However, she added that the woman said that she was then advised to remove the files “before providing the phones to our office”.
Despite this advice, the woman still provides telephones used to communicate with Harvey Weinstein “without any deletions,” said Joan Iluzi-Orbon.
Ben Brafman later issued a statement in response to the letter, saying the news “further undermines the integrity of Mr. Weinstein’s already deeply flawed indictment.”
Earlier, the lawyer requested that the entire case be dismissed.
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Last week, an accusation against Harvey Weinstein by actress Lucia Evans was rejected by a judge in New York, after she allegedly gave different information about the events.
Hervey Weinstein is accused of assaulting more than 70 women.
The allegations against the producer have helped spark the #MeToo movement, in which hundreds of women have accused high-ranking men in business, government and entertainment of sexual violence and harassment.
Harvey Weinstein, 66, agreed to carry a GPS tracker and hand over his passport.
The film mogul is also facing further investigations in Los Angeles and London and by the US federal government.
Harvey Weinstein, who received $ 1 million bail from his arrest in May, denies having had contact without consent, his lawyers said earlier.