US actor Charlie Sheen is reportedly in talks to narrate an internet documentary that suggests elements of the US government were behind the September 11 attacks on the World Trade Centre.
Sheen's representatives say he was involved in the production of a new version of Loose Change, a 90-minute conspiracy theory film that has been seen by more than 10 million internet viewers.
They would not elaborate on what role Sheen would take, but the New York Post said he would provide narration.
A year ago the 41-year-old actor told America's GCN radio network: "It seems to me like 19 amateurs with box cutters taking over four commercial airliners and hitting 75 per cent of their targets; that feels like a conspiracy theory. It raises a lot of questions."
Magnolia Pictures told the Post: "We are having discussions about distributing the existing video with Charlie's involvement as a narrator, not in making a new feature.
"We are also looking for productions with an opposing viewpoint. We like controversial subjects, but we are agnostic to which side the controversy comes from."