Kiefer Sutherland has promised that the end of the current season of 24 will be "powerful".

The actor revealed that the seventh season of the show will not end in an obvious way.

Speaking to Parade, he said: "It is going to end with some of the characters going through a very difficult emotional dilemma which will be much more dramatic than a big action sequence.

"I believe that it's the most powerful important ending that we've ever had to a season."

Sutherland also hinted that 24 fans may have to wait until the show has finished before a film is underway.

He suggested that it would be unfair on the writers to work on a film while they are still writing for the series, saying: "We collectively decided that when the show is finished then we would take [the film] on."

The final episode of the show's seventh season will air in the US in May.