US President Donald Trump called Australian PM Scott Morrison and asked for his help with an investigation into the origins of the Mueller inquiry, Australian officials have confirmed.
Mr Trump asked Mr Morrison to help find evidence to discredit the inquiry, US and Australian media reported.
Australia confirmed the call had taken place and that the PM agreed to help.
The revelation comes as Mr Trump faces impeachment proceedings at home over a call with another foreign leader.
The president is accused of pressuring the leader of Ukraine to investigate domestic political rival Joe Biden, in a phone call which was exposed by a whistle-blower last week.