"Cricket Australia (CA) advises that Australian batsman David Warner has been stood down from Australia's ICC Champions Trophy match against New Zealand tonight after being reported for breaching the CA Code of Behaviour," CA said in a statement.
Warner has been reported for breaching Rule 6 relating to "unbecoming behaviour" after he was allegedly involved in a physical altercation with an England player in the early hours of Sunday morning following the Champions Trophy match between the teams in Birmingham.
"Following a statement issued this morning by Cricket Australia, the England and Wales Cricket Board confirms that David Warner initiated an unprovoked physical attack on a member of the England team in a Birmingham bar following England's 48 run victory over Australia," the ECB said.
"Warner has admitted behaving inappropriately and has since apologised to the player involved who has accepted the apology. Following a full investigation the England team management has concluded that the England player was in no way responsible for nor retaliated to the attack," it added.