WELLINGTON, New Zealand (AP) — Chris Brown has canceled plans for a Down Under tour after Australian authorities earlier warned the troubled R&B singer that they were likely to refuse him a visa because of his criminal conviction for assaulting pop star Rihanna. Ticketing agency Ticketek on Wednesday posted a statement from Brown's promoters saying the planned December tour of Australia and New Zealand had been canceled and those who had bought tickets would get refunds. Citing privacy concerns, Australia's immigration department declined to say whether they had refused Brown a visa.Read more on NewsOK.com