That's unclear. Assange suspects there is a secret US indictment against him for WikiLeaks' publication of leaked classified American documents, which has infuriated USA officials.
The Ecuadorian government is to step up efforts to allow Mr Assange to continue his asylum in its country after Sweden's Director of Public Prosecutions Marianne Ny said she had chose to "discontinue" her investigation.
"The decision to discontinue the preliminary investigation is not because we have been able to make a full assessment of the evidence in this case, but because we did not see any possibilities to advance the investigation forward", Public Prosecution Director Marianne Ny said in a televised press conference.
Although Sweden has dropped its investigation of rape allegations against Assange, British police say they still intend to arrest him on a charge of jumping bail if he leaves the Ecuadorean Embassy.
Assange, 45, took refuge in Ecuador's embassy in London in 2012 to escape extradition to Sweden to answer questions about sex-crime allegations from two women. "The Metropolitan Police Service is obliged to execute that warrant should he leave the Embassy". He is now free to leave the embassy when he wants.
Swedish prosecutors have announced they are dropping the country's rape investigation of Julian Assange.
Sweden's top prosecutor says there's no possibility of arresting Assange "in the foreseeable future", but the case could be re-opened if he returns to Sweden before the statute of limitations expires in 2020.
British police said that since Assange is now wanted for a "much less serious offense" than the original sex crimes claims, police "will provide a level of resourcing which is proportionate to that offense". President Donald Trump has said it is "OK" with him if Sessions does that.
"Julian Assange has been a victim of a huge abuse of procedure". He was on bail when he arrived at the Ecuador Embassy in Central London nearly five years ago.
Manning was released on Wednesday after spending seven years in a USA military prison for passing the documents to WikiLeaks.More news: Change to European Union treaties 'not taboo' - Macron
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Recent public declarations such as this constitute an "obvious risk" for Mr Assange, said the letter.
A lawyer for one of the Swedish women who accused Assange of sexual assault said the prosecution decision to drop the investigation was a "scandal".
WikiLeaks tweeted after the Swedish announcement: "UK refuses to confirm or deny whether it has already received a USA extradition warrant for Julian Assange".
Samuelsson was not immediately available for further comment.
In January, Assange said he stood by an offer to go to the United States providing his rights were upheld and if former military intelligence analyst Chelsea Manning, who was responsible for a 2010 leak of classified materials to Assange's anti-secrecy group, was freed.
The development comes after Assange's lawyers demanded that Sweden drop his European arrest warrant.
"Consequently, there is no basis upon which to continue the investigation". "Focus now moves to U.K".
WikiLeaks tweeted after the Swedish announcement: "UK refuses to confirm or deny whether it has already received a U.S. extradition warrant for Julian Assange".
Police kept up round-the-clock guard outside the embassy until a year ago, when the operation was scaled back.