Charlie Sheen has responded to a report in the National Enquirer that he sexually assaulted Corey Haim on set of the the 1986 film 'Lucas', with a representative telling the Hollywood Reporter "Charlie Sheen categorically denies these allegations."

The allegations come from Haim's friend, former actor Dominick Brascia, who told the tabloid: "Haim told me he had sex with Sheen when they filmed Lucas. He told me they smoked pot and had sex. He said they had anal sex. Haim said after it happened Sheen became very cold and rejected him. When Corey wanted to fool around again, Charlie was not interested."

Haim's childhood friend and fellow actor Corey Feldman described an alleged encounter between Haim and an unnamed "adult" co-star while making 'Lucas' in his memoir, 'Coreyography'. Sheen would have been 19 at the time of the alleged assault, while Haim would have been 13.

Meanwhile, Los Angeles police have opened an investigation into Corey Feldman's claims that there is a paedophile ring that has been victimizing young actors in Hollywood for years, and that both he and Haim were victims.