Liam was said to have 'jokingly suggested' that Noel"s daughter Anais, 9, was conceived when the songwriter's former wife Meg Matthews was having an affair – a sneer that was tagged 'unforgivable' by the guitarist.
"It was a dumb thing to say. They had a big fight when he made the gag," Contactmusic quoted an insider telling gossip blogger Perez Hilton. “Noel went for him. He was in a blind fury. And he still hasn't calmed down," the insider apparently added.
The incident reportedly occurred, as the brothers were about to perform at Paris' Rock en Seine festival on August 28. Noel purportedly stormed out of the backstage area and officially declared leaving the band later that night.
In a statement released on the official Oasis website, he said: "It's with some sadness and great relief to tell you that I quit Oasis tonight. "People will write and say what they like, but I simply could not go on working with Liam a day longer."
He later added: "The details are not important and of too great a number to list. But I feel you have the right to know that the level of verbal and violent intimidation towards me, my family, friends and comrades has become intolerable."