Pharrell Williams has announced that his hip-hop/rock crossover band NERD have split up.

Billboard reports that Williams broke the news in an interview with BBC Radio 1 over the weekend.

He cited difficulties with the band's label, Virgin Records, as the reason behind the decision to split.

Williams will continue to work with his bandmate and production partner Chad Hugo as The Neptunes.

NERD released two acclaimed albums, 2001's 'In Search of...' and last year's 'Fly or Die'.