(CNN) The FBI and prosecutors with the US Attorney's Office for the Southern District of New York contacted Prince Andrew's lawyer to interview the prince about Jeffrey Epstein, but they have provided "zero" cooperation, according to US Attorney Geoffrey Berman.

In November, Britain's Prince Andrew said he was "willing to help any appropriate law enforcement agency with their investigations, if required" after he appeared on the BBC and was questioned about his relationship to Epstein and allegations he had sexual encounters with an underaged girl.

"It's fair for people to know whether Prince Andrew has followed through with that public commitment," Berman said at a news conference Monday outside of Epstein's Manhattan mansion.

"To date Prince Andrew has provided zero cooperation."

CNN has reached out to Buckingham Palace for comment.