US President Donald Trump asked Prime Minister Scott Morrison for Australia's help investigating the grounds for the Mueller investigation during a recent phone call.
The Australian Government has confirmed Mr Trump requested Mr Morrison assist Attorney-General William Barr who has been tasked by the President to run a counter investigation to the Mueller probe.
"The Australian Government has always been ready to assist and cooperate with efforts that help shed further light on the matters under investigation," the government spokesperson said.
"The PM confirmed this readiness once again in conversation with the President."
The call reportedly happened in the first week in September, before the Prime Minister travelled to the United States for his state visit with President Trump.
Opposition leader Anthony Albanese has called on Prime Minister Morrison to front up to questions over the call.
“This is a very serious issue. It's one that's attracted the world's focus,” he told reporters on Tuesday.
Mr Albanese is urging Mr Morrison to assure the Australian people he was not getting involved in a “very controversial” domestic issue in the United States.
“Scott Morrison needs to be very clear about the circumstances around this phone call, what was said and whether any agreement was reached in terms of assistance.”
“What [he] can't do here is ... dismiss questions which are legitimate from the media as just gossip or as just being in the bubble.”