The Wallabies head trainer was exasperated by a number of refereeing choices and when a Michael Hooper attempt was forbidden in the initial half, he showed up to mouth “f *** ing wizard” in reference to the decision made by umpire Ben O’Keeffe.
When asked during a broadcast meeting if he had really called O’Keeffe a “f *** ing cheat”, Cheika finished the interview.
“Following different media records and a recommendation from World Rugby, the comments as well as conduct attributed to Michael Cheika are being investigated.
On two occasions he walked down the steps from the coaches’ box to the touchline to remonstrate with officials and received abuse from supporters that he described as a “gobful” that was “not pleasant”, at one point resulting in a verbal exchange with a fan.
Jon Davis, the disciplinary officer for the autumn internationals, is looking into his behaviour on Saturday afternoon.
“Following various media reports and a referral from World Rugby, the comments and conduct attributed to Michael Cheika are being investigated. An update will be issued tomorrow (Tuesday),” read a statement issued by the body that oversees disciplinary matters for the November Tests.