Robbie Williams has reportedly left his rehabilitation programme a week early.

The Sun reports that the troubled singer, who is seeking to overcome his dependency on anti-depressants, sleeping pills and caffeine, has left the Cottonwood de Tucson centre in Arizona three weeks into a four week programme.

The Cottonwood de Tucson programme, which costs £700 a night, is renowned for being one of the toughest rehabilitation programmes in the US.

Williams has reportedly returned to his mum Jan, a drink and drug counsellor, in Los Angeles.