Ridley Scott believes there is more ''mileage'' in the Alien franchise and admits he is keen to explore more stories.

The 82-year-old acclaimed director, who helmed the much-loved the original film which starred Sigourney Weaver and John Hurt in 1979 as well as prequels Prometheus and Alien: Covenant, reckons there is still scope for future stories to be released in the sci-fi franchise.

Speaking to the Los Angeles Times newspaper, he said: ''I still think there's a lot of mileage in Alien, but I think you'll have to now re-evolve.''

Scott explained how a new story could evolve around the idea of how the extraterrestrial was unleashed on the Nostromo ship in the film's first outing.

''What I always thought when I was making the first one (was) why would a creature like this be made and why was it travelling in what I always thought was a kind of war-craft, which was carrying these eggs. What was the purpose of the eggs?

''That's the thing to question - who, why, and for what purpose is the next idea, I think," he added.

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