The Duke of York should put himself forward to be interviewed by US investigators, a lawyer representing some of Jeffrey Epstein's victims says, reports BBC.Gloria Allred questioned Prince Andrew's pledge that he would assist with probes into the convicted sex offender "if required".
She urged him to contact US authorities "without conditions and without delay".
Her comments came hours after the duke announced he is stepping down from royal duties over the scandal.
In a statement announcing his decision, Prince Andrew said the ordeal had become a "major disruption" to the Royal Family and that he is "willing to help any appropriate law enforcement agency with their investigations, if required".
Ms Allred said that while she is "glad" he is willing to cooperate, the meaning of his statement is not clear.
"Is he insisting that he be served with a subpoena to testify, or is he willing to speak to law enforcement without being legally required to do so?" she asked."My clients who are victims of Jeffrey Epstein have spoken to law enforcement without being 'required' to do so."
Ms Allred has represented the female accusers of US celebrities such as US President Donald Trump
and singer R Kelly.
The duke has faced a growing backlash following a BBC interview about his friendship with the US financier, who took his own life in August while awaiting trial on sex-trafficking charges.
Virginia Giuffre, one of Epstein's accusers, claimed she was forced to have sex with the prince three times. The duke has always denied any form of sexual contact or relationship with her.
The announcement that he would be stepping down from public duties, described by Buckingham Palace as "a personal decision", was taken following discussions with the Queen and Prince Charles.