Controversial filmmaker Michael Moore confesses he shouldn't be allowed to make a sequel to his controversial documentary Fahrenheit 9/11 - because its plot is "toxic".

 The Oscar winner has signed a deal to begin work on the follow-up to his hit film, and is currently offering the idea to foreign buyers at the Cannes Film Festival in France.

 The original film took aim at the Bush government in the aftermath of the 9/11 terrorist attacks in September 2001.

 But Moore admits making another controversial documentary will be "risky".

 He says, "It's something I shouldn't make, something that is dangerous."

 The new movie will pick up where the last one left off, following Bush's plummeting ratings, the struggling U.S. economy and the ongoing war in Iraq.