In a statement, Rugby Australia (RA) said it had been "made aware of an incident involving Wallabies and Queensland Reds back Karmichael Hunt in Brisbane".
"Rugby Australia takes all matters relating to the off-field behaviour of its players seriously and has commenced an investigation into the incident in conjunction with the Queensland Rugby Union," it added.
A former rugby league and Australian Rules football player, Hunt made his Wallabies debut against Fiji in June and signed a two-year contract extension with Rugby Australia last month. Sky more