Sydney - Cricket Australia said on Wednesday it was investigating an off-field incident, reportedly involving alcohol, related to explosive opener David Warner during the ICC Champions Trophy in England.
The Australian Broadcasting Corporation said the batsman had been stood down from Australia's upcoming match against New Zealand, but no decision had been made on whether to send him home.
"We are aware of reports regarding an incident involving David Warner in England." CA is investigating and will be commenting further soon," Cricket Australia tweeted.
No specific details were available, but The Australian newspaper said it was "alcohol-related".
Warner last month came under fire for a Twitter tirade directed at two respected Australian cricketing journalists after a story about corruption and fixing in the Indian Premier League was illustrated with a picture of him.
After posting a tweet with expletives aimed at journalist Robert Craddock, Warner took issue with Craddock's News Limited colleague Malcolm Conn in abusive tweets that sparked a back-and-forth exchange.
He was found guilty of breaching Cricket Australia's code of behaviour and fined A$5 750.
Warner later admitted he "could have chosen my words better".
"I'm extremely remorseful of the comments that I made and next time I've got to be a bit more professional with the choice of words I used," he said at the time.
Warner is with the Australian team in England for this month's ICC Champions Trophy and then the Ashes series in July-August.