Movies
The eagerly-awaited film will premiere at Cannes on Sunday, but reviews are already appearing on the internet.
The fourth instalment reunites original writer/producer George Lucas, director Steven Spielberg and star Harrison Ford from the original trilogy.
A poster on Ain't It Cool News, who claimed to be a cinema executive, called it "the Indiana Jones film you were dreading".
He said: "It's definitely not a good Indy movie. For those of you that feel that the new Star Wars movies robbed your childhood, expect some molestations from uncles George and Steven."
However, Spielberg's representative said the director was unconcerned by the reports, saying: "[Steven] just doesn't want anything spoiled for fans. He wants people, even critics, to go into a theatre and enjoy the surprises of his movies."
Indiana Jones and the Kingdom of the Crystal Skull opens in cinemas on May 22.
> Lucas: Fans may not like 'Indy 4'
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