A school bus drove around outside Buckingham Palace with a poster asking people to get Prince Andrew to call the FBI.

The poster included the FBI's UK phone number and a picture of the prince, and read: "If you see this man please ask him to call the FBI to answer their questions."

Gloria Allred, the lawyer who is representing five of Jeffrey Epstein's accusers, is behind the stunt, which also directs onlookers to her website, the Press Association reported.

Prince Andrew, also known as the Duke of York, stepped down from his royal duties last year after fresh questions about his association with Epstein.

Visit Business Insider's homepage for more stories.

A yellow school bus circled Buckingham Palace on Friday with a striking message for Prince Andrew from the lawyer who represents five of Jeffrey Epstein's accusers.

The Press Association reported that the blue poster on the side of the bus included the prince's photo and the following request: "If you see this man please ask him to call the FBI to answer their questions."

The poster also included the number to call the FBI from the UK, and the website of lawyer Gloria Allred, who according to PA is behind the stunt.

The prince promised to assist the FBI with its investigation after an infamous BBC interview in November 2019, in which he was grilled about his friendship with the late financier who stood accused of sex trafficking numerous underage girls.

Prince Andrew and Virginia Roberts Giuffre, along with Ghislaine Maxwell. This photo was included in an affidavit in which Giuffre alleged Prince Andrew directed her to have sex with him. Florida Southern District Court

Prince Andrew also denied that he had ever met then-17-year-old Virginia Roberts Guiffre, who said Epstein had forced her to sleep with the prince.

The interview resulted in a spectacular fall from grace for Prince Andrew, and businesses and organizations affiliated with him rushed to cut ties. He stepped down from royal duties shortly after.

In that announcement, he released a statement that said he would "help any appropriate law enforcement agency with their investigations, if required."

But despite calls from the women's rights lawyers involved, US attorney Geoff Berman said January 27 that neither the FBI nor federal agents had had any response to its requests for help from the prince.

A composite image of Jeffrey Epstein in July 2013 and Prince Andrew in November 2015. Florida Department of Law Enforcement via AP; Chris Jackson/Reuters

Epstein killed himself in a New York jail cell in August, where he was awaiting trial on sex trafficking charges. Following his death, his victims have sought justice from his web of powerful people who they say enabled Epstein's sexual abuse.

Gloria Allred, known for pursuing high-profile women's right cases, has also represented accusers of Harvey Weinstein and R Kelly.

In response to a Business Insider query sent after Berman's press conference, Buckingham Palace sent the following statement: "This issue is being dealt with by The Duke of York's legal team. Buckingham Palace will not be commenting further on this particular matter."