Music mogul Simon Cowell has teased that he is "absolutely sure" One Direction will end their hiatus at some point and return to the music scene. 

During an interview with E! recently, Cowell said:

"It was always gonna come. You can't work at that level the way they did. I mean lots of things are gonna be announced over the next few months, but they are the nicest people to work with. Hard working, appreciate everything; so it won't be the end."

When asked by E! if fans should expect more from One Direction, he added: "Yeah, there will be more, I'm absolutely sure of that."

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Watch 1D's Carpool Karaoke session here: