Harry Potter star Emma Watson has reportedly refused to sign a new contract to star in the last two movies in the J.K. Rowling fantasy series - despite being offered $3.9 million to continue her role as Hermione Granger. The 16-year-old - who was confronted by a crazed fan at her British school earlier this week - has allegedly tired of her role as Harry Potter's best friend and wants to try new projects.

But her decision has thrown the final two films, Harry Potter And The Half-Blood Prince and "Harry Potter And The Deathly Hallows," into disarray, with filming due to start later this year.

Rupert Grint, who plays Ron Weasley in the fantasy franchise, told British newspaper the News Of The World, "Emma doesn't want to do it any more. She's tired of being known as 'that girl from Harry Potter'. Daniel (Radcliffe) and I are distant from her now. We don't text or talk to her when we are not filming."

Movie giants Warner Brothers confirmed Watson has not signed on for any more "Harry Potter" movies but played down reports Emma Watson is quitting the film franchise, insisting they are "extremely confident" she will continue to play Hermione Granger.

A spokesperson for producers Warner Bros says, "We're extremely confident that Emma will be back for films six and seven." Filming for the sixth movie, "Harry Potter And The Half-Blood Prince," is scheduled to begin later this year.