'X Factor' judge Louis Walsh has confirmed that he's no longer on good terms with Boyzone star Ronan Keating after slamming him in a new interview with The Times.

Walsh didn't appear to have a nice word to say about the 'When You Say Nothing At All' hitmaker and told the publication:

"Ronan thought he was George Michael... He said he didn't want to be a karaoke artist. Well that's what he is."

The music mogul, who recently admitted that the forthcoming new series of 'The X Factor' will be his last, then went on to describe Keating as a "little manufactured popstar who actually believed his own publicity".