Harrison Ford is set to make a fourth Indiana Jones movie - 20 years after Raiders of the Lost Ark.

The US superstar, 59, is poised to team up with director Steven Spielberg and producer George Lucas.

Hollywood studio Paramount said it was looking at scripts but wouldn't confirm if Sir Sean Connery would return as Indy's father.

Sir Sean played the role 12 years ago in the last instalment, The Last Crusade.

Insiders told the New York Post that a fourth Indy film could have a budget of £100 million.

But questions were being asked whether Ford, now 59, would be believable in the role of the all-action movie.