James Franco and Seth Rogen aren't normally ones to shy away from the media spotlight, but after the week they've had it's no surprise they won't be carrying out their planned promotional duties for The Interview.

The controversial comedy about North Korean leader Kim Jong-Un is thought to have caused a serious cyber attack that breached Sony's computer system late last month, which the 'Guardians of Peace' have taken responsibility for.

Now a serious threat has been made by the person or group, causing the duo to cancel appearances on The Tonight Show with Jimmy Fallon, as well as Late Night With Seth Meyers, according to Variety.

The Interview is still scheduled for release on Christmas day, though there has been further threats of physical violence at locations that show the film.

Speaking on Good Morning America on Monday (November 15), James and Seth addressed the issue of the Sony hack.

Seth said: "I can't definitively say I know the ramifications of the storm. I mean, I don't know if the hacking honestly is because of our movie, definitively or not. I know that it has been the center of a lot of media attention lately."

"It is weird because we just wanted to make a really funny, entertaining movie and the movie itself is very silly and wasn't meant to be controversial in any way," he added.