US rapper Kanye West has fuelled speculation that Black Eyed Peas star will.i.am has been involved in the production of U2's next studio album.

Will.i.am first discussed his contribution with the project last week, telling Billboard that he wasn't “supposed to talk about that”.

But West has now confirmed his fellow rapper's role, writing on his blog: “WILL I AM IS PRODUCING ON U2's NEXT ALBUM.

“I'M SURE IT WILL BE DOPE AS SHIT JUDGING FROM THE CRAZY BEATS HE'S DONE IN THE PAST 3 YEARS!”

As previously reported on Gigwise, U2's new album is due to be released in early Spring 2009.

The record, reported to be titled 'No Line On The Horizon', also features production from Brian Eno and Daniel Lanois.

U2 live in 3D