Vuna accuses Rebels teammate of punch Wallabies star Kurtley Beale allegedly punched teammate Cooper Vuna in an incident following the Melbourne Rebels' franchise-record 64-7 Super Rugby loss in South Africa. Hours after the Rebels' humiliating record 10-try defeat by the Sharks in Durban on Saturday night (early Sunday AEDT), Vuna tweeted that Beale had punched him. I tried to help someone but got punched so instead of putting him in hospital il leave! Vuna posted at 1.27am local time (11.27am AEDT). The tweet was deleted about half an hour later but later published on fan website Green and Gold Rugby. Beale didn't play in the match as he continues his recovery from hand surgery while the Sharks game was Vuna's first competition match this season after a shoulder injury. Vuna, who played two Tests last year, has been on a self-imposed alcohol ban. Rebels media manager Adam Freier issued a statement on the matter on Sunday afternoon but indicated the club would not name the players involved until it had been dealt with. He said no outside parties were involved. "The Melbourne Rebels would like to respond to reports of an incident between players following the team's bus trip home to their hotel in Umhlanga," said the statement. The club is treating this matter as serious and a full internal investigation has begun with the players involved. The case was sent to mediation late last month, with the first session to take place next month. Earlier, Rebels coach Damien Hill had questioned his players' pride in their jersey following their heavy loss to the Sharks which surpassed their previous biggest defeat of 53-3 by the Queensland Reds in their first year in the competition in 2011.