WALLABIES star James O'Connor has been stood down from this Saturday's Tri Nations decider, and could face further action as the ARU investigates allegations into an altercation in Paris on last year's spring tour.

The 21-year-old was asked to provide an Australian Rugby Union disciplinary committee with an explanation by close of business yesterday as to why he failed to attend two official team commitments last Thursday. The Herald understands he claimed his absence was nothing more sinister than sleeping in.

Odd man out ... the suspended James O'Connor with the Wallabies at training at Ballymore in Brisbane. Credit:Glenn Hunt

''As well as his ban from rugby until Sunday, 28 August, O'Connor has been handed a $10,000 suspended fine for his failure to attend both of Thursday's proceedings,'' the ARU statement read. ''The suspended fine will remain in place until 31 December 2012.''

And O'Connor's World Cup place could yet be in jeopardy, with ARU officials investigating allegations into another incident involving O'Connor in France during last year's spring tour.