Noel Gallagher reportedly branded his brother LIAM a "f**king moron" after walking away from Oasis on Friday (28Aug09).
The guitarist quit in a rage after a bust-up with his singer sibling backstage at a rock festival in Paris, France.
New reports suggest the argument blew up over Liam's boozing, with Noel accusing the band's frontman of behaving unprofessionally by arriving for the Paris show drunk.
And after announcing he had left the band, Noel reportedly told a friend that Liam is a "f**king moron" - and made a barbed comment about the singer's new fashion line, Pretty Green.
Britain's The Sun newspaper reports Noel told his pal, "They say never work with children and animals. No one mentioned f**king morons though, did they? I think all that modelling malarkey has gone to his head. It's a pleasure to give him time and space to work on his autumn/winter collection."
Liam, currently on holiday in Lake Como, Italy, with wife Nicole Appleton and Oasis bass player Andy Bell, is yet to comment on the split.