A Sylvester Stallone accuser has reported an alleged act of sexual misconduct to police, and the case will be investigated ... despite the statute of limitations having long since expired.
Law enforcement sources tell TMZ ... the woman filed her report recently with Santa Monica police --and alleges the incident went down in the early '90s. TMZ broke the story ... Stallone's camp was aware of the allegation and say they've been told she's alleging rape during a 1990 meeting at Stallone's office. He denies the claim.
We're told police will investigate, and present it to the D.A.'s Office to decide whether there's enough to prosecute. The statute of limitations for sexual assault or battery in California is 10 years -- but in the current environment ... our sources say police are looking into all allegations of sexual misconduct.