New York City Police say an unidentified person has made a credible rape allegation against Hollywood producer Harvey Weinstein and they are gathering evidence for a possible arrest warrant.

Deputy Chief of Detectives Robert Boyce told a news conference that the alleged victim “put forth a credible and detailed narrative”.

“We have an actual case here,” Boyce said. He said the police department became aware of the accusation on October 25.

Boyce said it was a seven-year-old case and “we have to move forward gathering evidence”.

Boyce said that because Weinstein was out of state the police department would need a court-ordered warrant for any arrest.

Reuters requests for comment from Weinstein’s representative and his lawyer were not immediately answered.

A number of women have claimed that Weinstein sexually harassed or assaulted them over the past three decades.

Weinstein has denied having non-consensual sex with anyone. Reuters has been unable to independently confirm any of the allegations.