Bruce Willis has revealed that a fourth Die Hard movie is on its way.

While in London to promote his new movie, Hostage, he told Radio 1: "Die Hard 4.0 is being written as we speak, and if all goes well we'll be shooting it in Autumn on the east coast of the United States."

"John McClane has retired as a cop, and that's all that Fox have allowed me to tell you about it."

Hostage, directed by Florent Emilio Siri, sees Willis as former LAPD hostage negotiator Jeff Talley.