Sigourney Weaver says she is hopeful about reprising her role in a new Alien film.
The Hollywood actress, who starred as Ellen Ripley in the original 1979 sci-fi horror and three sequels, said she had discussed a fifth film in the series with director Neill Blomkamp.
Sigourney, 66, told an audience at Comic-Con International in San Diego that Blomkamp had pitched the idea while they worked on the 2015 movie Chappie.
She said: "Four months later, I got a script that was so amazing and gives the fans everything they are looking for -- plus innovates in a lot of ways.
"(Blomkamp) has work to do, and I have work to do. I am hoping when we finish those jobs, we will circle back and start to do it."
Sigourney told 6,500 fans gathered in San Diego Convention Centre's Hall-H that she had no interest in an Alien film set on Earth because she thought "Earth was boring."
She appeared on a panel celebrating the 30th anniversary of Aliens, the second film in the franchise, along with the movie's director James Cameron and co-stars Bill Paxton, Lance Henriksen, Paul Reiser, Michael Biehn and Carrie Henn.
Ridley Scott, who directed the original Alien film, is currently working on a second prequel called Alien: Covenant - a follow-up to 2012´s Prometheus.
Sigourney last portrayed Ripley on screen in the 1997 film Alien Resurrection, the fourth movie in the series that ended with a clone of Ripley arriving on Earth. She is about to start working with Cameron again on his sequels to Avatar.