Earlier in the day, the US Attorney for the Southern District of Florida, Ariana Fajardo Orshan said in a virtual press conference that she had a message for all top Venezuelan officials: "The party's over."
Maduro suggested that UN Secretary-General Antonio Guterres name a "commission" of electoral observers, "so they can be witnesses on the day the Venezuelan people recover their National Assembly".
Upon his release in 2018, he left for Peru, and the opposition alleged that he had been exiled from the country.
Guaido in January assumed a rival presidency in Venezuela, alleging that Maduro's 2018 re-election was illegitimate, and is seeking international actions to oust the president.
The US President Donald Trump issued an executive order that freezes all Venezuelan state assets in the United States on August 5.
Her comments came at the end of a three-day visit to the country on the invitation of embattled Venezuelan President Nicolas Maduro, who has been facing allegations of cracking down on political opponents amid rampant hyper-inflation and shortages of basic goods.
In the case of a failed assassination attempt against President Nicolas Maduro in August 2018, 38 people were charged and 31 of them were imprisoned.
On February 22, Maduro ordered the border crossings between Venezuela and Colombia in Tachira state to be closed, a day before the Venezuelan opposition unsuccessfully tried to bring in humanitarian aid by force to relieve shortages of medical supplies.
Guaido -- who is backed by the United States and is recognized as interim president by more than 50 countries -- has been leading a push to oust leftist firebrand Maduro, who has presided over a crumbling economy after succeeding Chavez in 2013.
The talks in Norway this week will be the first face-to-face meeting between representatives of Maduro and those of his rival Guaido, who is recognised as interim president by some 50 countries.
