George Lucas has hatched plans to revive action hero Indiana Jones for a fifth instalment of the movie series.

 Last year, Lucas joined forces with director Steven Spielberg and Harrison Ford on a long-awaited fourth film, Indiana Jones and the Kingdom of the Crystal Skull, and he admits that the filmmakers have left the door open for another sequel.

 He says, "I haven't even told Steven or Harrison (Ford) this. But I have an idea to make Shia (LeBeouf) the lead character next time and have Harrison come back like Sean Connery did in the last movie. I can see it working out."

 Connery played Ford's father in Indiana Jones & The Last  Crusade.

 Fans of the franchise will have to wait until the new film premieres at France's Cannes Film Festival on Sunday  to learn if LaBeouf's character turns out to be the adventurer's son, as has been rumoured.

 Meanwhile, Ford insists the fourth film will be the last.

 Speaking at the Cannes Film Festival, he insists another sequel is not in his plans: "It took 20 years to get this one together. Nobody's really anticipating that sort of thing."