Star Wars bosses warn websites not to leak plots

Movie bosses financing forthcoming prequel Star Wars: Episode III - Revenge of the Sith are threatening to take legal action against internet sites that leak pictures and plot details.

Various websites are displaying photographs of a pregnant Padme Amidala, played by Natalie Portman, and a new android villain named General Grievous.

Other shots online include an aggressive lightsabre duel between Anakin Skywalker and his former mentor Obi-Wan Kenobi - which leaves Skywalker horribly scarred and propels him to don the black suit of Darth Vader.

Producers of the film had issued a warning to various internet sites last year, and have now renewed their threat of legal action.

Revenge Of The Sith is due to hit American cinemas on May 19.