Steven Spielberg has paid tribute to late author Ray Bradbury.

The science-fiction writer passed away yesterday at the age of 91.

The ET director said: "He lives on through his legion of fans. In the world of science fiction and fantasy and imagination he is immortal."

Bradbury had previously spoken of his appreciation for Spielberg's work.

In 2003, he stated that Close Encounters was the best film of its kind ever made saying: "It takes too long, but the transfiguration at the end, with the splendid arrival of the mother ship - that makes up for everything.

"I was so amazed and changed when I saw it that I went over to the studio to tell Spielberg what a genius he was. And he said, 'You know, I never would have done this film if I hadn't seen [your] It Came From Outer Space when I was a kid'."