Sylvester Stallone denies allegations he sexually assaulted 16-year-old girl and threatened violence

Actor disputes claims said to appear in a 1986 police report

Actor Sylvester Stallone at the premiere of "The Promise" in Los Angeles, California on April 12, 2017. (Reuters)

Sylvester Stallone has denied an allegation that he sexually assaulted a 16-year-old-girl in 1986.

The actor's spokeswoman described the claims, reported by the Daily Mail, as "a ridiculous, categorically false story".

Drawing from a police report filed in July of 1986, the paper reported that the young woman alleged Stallone coerced her into sexual activity with him and his bodyguard. She declined to pursue charges.

After the encounter Stallone threatened the girl with violence if she told anyone, according to the police report.

But Stallone's spokeswoman Michelle Bega told TMZ: "No one was ever aware of this story until it was published today, including Mr Stallone. At no time was Mr Stallone ever contacted by authorities or anyone else regarding this matter."

Laura Meltzer, a spokeswoman for the Las Vegas Metropolitan Police Department, said their records did not go back far enough to be able to confirm the authenticity of the police report cited by the Mail. She said the formatting of the report was consistent with the department’s procedures. The Mail said that a former head of the Las Vegas Police department’s sexual assault unit confirmed the document was genuine.

An attorney for Stallone did not return a call and an email from The Independent seeking comment.

The allegations against the Rocky come after numerous sexual misconduct claims against other Hollywood luminaries, media figures and politicians.

Most recently, Senator Al Franken apologised after broadcaster Leeann Tweeden said he kissed and touched her without her consent during a 2006 tour with the then-comedian.

Ms Tweeden shared a photo of Mr Franken grasping her breasts as she slept.