The last installment in the Harry Potter movie franchise will be released in two parts - because one edit of The Deathly Hallows will leave out too much information about the boy wizard's final adventures.

The sixth film in the series, Harry Potter and the Half-Blood Prince, is due for release in November, and although the characters' futures are wrapped up in just seven novels by author J.K. Rowling, fans of the movies will be given an extra treat with a double dose of Harry Potter and the Deathly Hallows.

A source says, "There's so much to fit that the view is the last movie should be in two halves. There is a huge battle when Harry, played by Daniel Radcliffe, takes on (evil wizard, Lord) Voldemort (played by Ralph Fiennes) that needs to be done really well."

And Rowling has briefly commented on the reports herself, stating on her website: "It is simply impossible to incorporate every storyline into a film under four hours long."

Fans of the books have previously criticised the big-screen adaptations for their lack of detail.