Australian reports claimed England wicket-keeper Bairstow's head connected with the side of Bancroft's face at a bar in Perth four weeks ago after the team arrived in the city for the Ashes tour on October 29.
19/11/13 England's Kevin Pietersen (L), Johnny Bairstow (2nd from L), Matt Prior and Alastair Cook (R) during training Mandatory Credit: Action Images / Jason O'Brien.
A spokeswoman for the Australian also declined to comment but Fox Sports News reported that the incident had occurred at the Avenue bar in Perth and that there had been no involvement by police.
"There has been no report of any incident from the venue, security or police and there was no injury reported".
The incident took place even before Bancroft went on to become the 451st player to wear the Baggy Green and don the white kit for Australia and been involved in a duel with England over the past four days at the Gabba.
The incident allegedly took place at a hotel while the England team was in town for its tour-opening match against a Western Australian XI, the report said.
The England team agreed to a policy of self-policing which doesn't seem to have worked
It's understood the England and Wales Cricket Board (ECB) is now trying to find out more facts about the alcohol-fuelled incident that entered the public domain on Sunday, when it was used as sledging fodder on day four of the Ashes opener.
As per the report, there were moments during the England second innings, where Bairstow scored 42 runs, when he was sledged by the hosts and David Warner provided the send off. "David Warner had a fair bit to say to him (after the dismissal)", the reporter explained.
England are already in the soup after their mainstay all-rounder Ben Stokes is still under police investigation after being involved in a fight0night outside a Bristol nightclub.
The players sat down to set out some guidelines around how to approach drinking on this tour, according to coach Trevor Bayliss. Bancroft was not a member of the Australia squad at the time.
Jonny Bairstow is an England cricket star who represents his country in Test, One-Day and Twenty20 versions of the game.
Before jumping on a plane to Australia, England captain Joe Root strongly denied that his team suffered from a drinking culture.
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