WikiLeaks said Australian Consul Clare West would visit the Ecuadoran embassy on Monday to request that the mission hand over Assange's belongings.
Lenin Moreno also said no other nation had influenced the decision to revoke the WikiLeaks founder's asylum, which he said followed violations by Assange.
WikiLeaks founder Julian Assange is seen in a police van after was arrested by British police outside the Ecuadorian embassy in London, Britain April 11, 2019. "Julian Assange is somebody who has done a lot to shine a light on real abuses of state power and the war crimes that we saw in Iraq, so it's really key, I think, to ensure that we give the public the information so that we can hopefully ensure that politicians, at least in this country, don't ever take us into an illegal war again as we saw in Iraq in 2003", Williamson said.
Julian Assange, dressed in a vest and shorts, skateboards around his bedroom in the Ecuadorian embassy.
"It is unfortunate that, from our territory and with the permission of authorities of the previous government, facilities have been provided within the Ecuadoran embassy in London to interfere in processes of other states", Moreno said.
"Any attempt to destabilize is a reprehensible act for Ecuador, because we are a sovereign nation and respectful of the politics of each country", Moreno told The Guardian. He now faces jail for breaching bail and possible extradition to the US.
Leaked security footage shows WikiLeaks founder Julian Assange try to skateboard in a room in London's Ecuadorian embassy, where he lived for nearly seven years.
Ecuadorian president Lenín Moreno had previously chastised Assange for skateboarding indoors, urging him to change some of his behaviour inside the embassy, including spending more time cleaning up after his pet cat.
Khloe Kardashian invites ex Tristan Thompson to daughter's party
I remember Kourtney and Kim telling me before she was born, 'You're never going to take a bath again!' And it's like, 'What are they talking about? "Can we slow down time?" - BANG! The party came nearly a year to the day Tristan was accused of being unfaithful for the first time, when he kissed another woman days before True was born.
He made the move after losing his battle against extradition to Sweden where he faced allegations including rape.
"We can not allow our house, the house that opened its door to become a centre for spying".
Dubbed "Collateral Murder", the footage prompted worldwide concern over the conduct of USA forces stationed in the Middle East, something supporters of WikiLeaks argue remains behind Washington's renewed drive to extradite Assange to face charges in the United States.
UK Home Secretary Sajid Javid would be expected to have the final say in which claim takes priority.
Earlier Sunday, Assange's lawyer said his client would cooperate with Swedish authorities if they reopen a rape case against him but would continue to resist any bid to extradite him to the United States.
He took refuge at the Ecuadorian embassy in 2012 and had been "in hiding" there until last week when he was forced to leave by the United Kingdom police.
His next court appearance is May 2 via video link.