Mariah Carey's husband Nick Cannon is stepping down as the host of his weekly U.S. radio show.

The America's Got Talent presenter is pulling the plug on his syndicated Top 40 programme, Cannon's Countdown, after two years in order to focus on other projects.

A statement from the rapper-turned-actor reads, "It has been an amazing experience working with the team these past few years. I've made the difficult decision to step away from my on air duties in radio in order to have the time to dedicate to (my production company) NCredible Entertainment and the various projects that I have on my plate in film, Tv, retail and a new album. It is my plan to return to radio and my listeners very soon through my music."

His last broadcast will air on 8 June (13), one month before Cannon is set to revive his popular sketch comedy Tv show Wild 'N Out.

He has been cutting back on his radio commitments since early 2012, when he quit his New York morning show on doctor's orders after he was diagnosed with acute kidney failure.