Start of new 'Harry Potter' film illegally put online

Film bosses are desperately trying to get a section of the new 'Harry Potter' film removed from the internet after it was leaked before the movie opens.

'Deathly Hallows: Part One' is out today, but there is already a 36-minute clip online - apparently the start of the film.

Warner Brothers said it is determined to track down whoever stole and posted it.