James Cameron to film 3 'Avatar' sequels back-to-back

James Cameron is to shoot three sequels of his blockbuster movie Avatar at the same time.

Actress Sigourney Weaver, who is due to reprise her role as D. Grace Augustine for the follow up motion pictures to the 2009 3-D sci-fi film - which tells the tale of humans exploiting the natural resources of the planet Pandora - confirmed the plans are in her schedule.

In an interview with Showbiz 411, the 62-year-old actress admitted that she has no idea how Cameron is going to helm all three movies at once, nor the amount of time it will take.

“I just show up,” Contactmusic quoted her as telling the publication.

Sigourney’s comments come after the 57-year-old - who has directed Titanic, The Terminator and Aliens - previously admitted that he only plans to make Avatar films for the rest of his career

“I’m in the ‘Avatar’ business. Period. That’s it. I’m making Avatar 2, Avatar 3, maybe Avatar 4’ and I’m not going to produce other people’s movies for them,” he had said

“I’m not interested in taking scripts.... I think within the Avatar landscape I can say everything I need to say that I think needs to be said, in terms of the state of the world and what I think we need to be doing about it. And doing it in an entertaining way,” he said.