WikiLeaks founder Julian Assange flew out of the UK on Monday apparently a free man after reaching a plea deal with US authorities over spy charges that have dogged him for more than a decade.

In the coming hours, Assange, 52, is expected to plead guilty to a single espionage charge in a court appearance on a tiny US-controlled Pacific island and prosecutors will seek a sentence equivalent to time served.

WikiLeaks published footage of Assange being driven from Belmarsh jail in London, where he has been detained for five years, to Stansted Airport. He then boarded a private jet that landed in Bangkok, Thailand to refuel.

Assange has been a wanted man since 2010 when WikiLeaks released hundreds of thousands of classified US military documents on Washington's wars in Afghanistan and Iraq - the largest security breaches of their kind in US military history - along with swathes of diplomatic cables.

In 2012, as authorities circled him for that and over 'credible and reliable' sex crime allegations from a woman in Sweden, he fled into London's Ecuadorian embassy where he remained for seven years in often farcical circumstances.

After falling out with the South American nation's rulers he was dragged out of his bolthole in 2019 and locked up in Belmarsh while the US attempted to extradite him.

But that legal process ended abruptly yesterday, and WikiLeaks broke the news with a post on X reading: 'Julian Assange is free!' 

In a pre-recorded video filmed outside Belmarsh prison, Assange's wife Stella and WikiLeaks editor-in-chief Kristinn Hrafnsson said: 'If you're seeing this, it means he is out.'

Assange, who has been sought for over a decade over allegations he hacked the US government, today left HMP Belmarsh in London and flew out of the country on a flight from Stansted at 5pm today

While he has reportedly been allowed to leave the country to go back to his native Australia, British officials have not yet confirmed his release

He spent the last 12 years years in prison or holed up  in the Ecuadorian embassy in London

A plane, understood to be carrying Wikileaks founder Julian Assange, is pictured on the tarmac at Don Mueang International Airport in Bangkok today

Stella Assange and WikiLeaks chief Kristinn Hrafnsson speaking outside Belmarsh prison in a pre-recorded video

WikiLeaks in 2010 released hundreds of thousands of classified US military documents on Washington's wars in Afghanistan and Iraq

According to a document filed in federal court (pictured), Assange will plead guilty to the single charge of hacking

Assange is expected to appear in Saipan, the capital of the Northern Mariana Islands, at 9am local time (pictured)

A plane matching the type Assange was pictured boarding was tracked as it headed from Stansted Airport north of London to Bangkok in Thailand. It was unclear if it is the one Assange was on board

On Tuesday morning, Stella shared an image on X of her husband video-calling her from Stansted airport on Monday

The group said: 'After more than five years in a 2x3 metre cell, isolated 23 hours a day, he will soon reunite with his wife Stella Assange, and their children, who have only known their father from behind bars.'

Assange married Stella, a South African-born lawyer who he met when she joined his legal team in 2011, while locked up in Belmarsh in 2022. Last night she posted on X: 'Julian is free!!!! Words cannot express our immense gratitude to YOU - yes YOU, who have all mobilised for years and years to make this come true. THANK YOU. THANK YOU. THANK YOU.'

The couple have two children together, conceived while he was in the Ecuadorian embassy. On Tuesday morning, Stella shared an image on X of her husband video-calling her from Stansted airport on Monday.

While he has apparently been allowed to leave the UK to go back to his native Australia, British officials have not yet confirmed his release. MailOnline has contacted the UK's Foreign Office, the Home Office and the Ministry of Justice for comment.

Reacting to the plea deal, Alexander Downer, the former foreign secretary of Australia, told BBC Radio 4 Today on Tuesday morning: 'This is an appropriate way, I think, for it to be brought to an end. 

'The plea bargain is such that Julian Assange has admitted his guilt in this case to conspiracy to obtain and disclose national defence information, which is an extremely serious offence.'

The former high commissioner to the UK added: 'I don't think we should walk past the fact that this is a very serious charge he's admitted to so in that sense it's no doubt appropriate.

'He's admitted his guilt now... that's part of the plea bargain. So the fact is we can now satisfactorily say he was guilty of a very serious offence.'

When asked about how some people will give him a heroes welcome in Australia, he responded: 'Most people don't in Australia [think that he fought to get the truth as a journalist]. A tiny minority of very vocal people see that he was a journalist, their claim is... that he was just reporting information. But he has been found guilty of a much more serious offence than that. 

'And I think most people in Australia would agree that it's not appropriate to steal national security information and publish it. 

'Governments have to have some degree of privacy in their communications... and by the way, he didn't just release information relating to Iraq and Afghanistan... but he released a huge amount of information, much of which was very embarrassing and some of which endangered lives. 

'So what he did was a criminal offence and it was a terrible thing to do morally as well, endangering people's lives in that way, is just completely inappropriate. I don't think many Australians have sympathy for him, no. Just because he was Australian doesn't mean he's a good bloke.'

The Assange circus is now expected to shift to the tiny US-controlled Pacific island of Saipan, 1,500 miles east of the Philippines, where Assange is listed to appear in court at 9am local time on Wednesday (12am London, 7pm Tuesday in New York, 9am Wednesday in Sydney).

Matthew McKenzie, deputy chief of counterintelligence and export control at the US Department of Justice, and Shawn Anderson, the US Attorney for the Districts of Guam and the Northern Mariana Islands, said they expected Assange to return to Australia after the proceedings have concluded.

A plane matching the one Assange was purportedly seen flying out on is heading to Bangkok. 

Assange's family and friends welcomed his release this morning.

His mother Christine Assange said: 'I am grateful that my son's ordeal is finally coming to an end. This shows the importance and power of quiet diplomacy. Many have used my son's situation to push their own agendas, so I am grateful to those unseen, hard-working people who put Julian's welfare first.'

His father John Shipton added: 'It looks as though Julian will be free to come back to Australia. My thanks and congratulations to all his supporters… that have made that possible, and of course, the Prime Minister, Anthony Albanese.'

Mr Shipton said he was 'energised' by the news.

'I don't fade easily, you know. And neither does Julian. It must be a family trait,' he said.

He has been supported by his wife Stella (pictured) for years

Many press freedom advocates have argued that criminally charging Assange represents a threat to free speec

The artwork 'Anything to say?' by Italian artist Davide Dormino portraying Edward Snowden (L), Julian Assange (R) and Chelsea Manning (R), is displayed in the Piazza Dante in Naples, Italy, 01 June 2024

The plea deal emerged yesterday when US prosecutors filed criminal paperwork against him in the US Commonwealth of the North Mariana Islands in the western Pacific Ocean.

The filing says Assange has agreed to plead guilty to a single criminal count of conspiring to obtain and disclose classified US national defence documents.

In the agreement, prosecutors will look for a 62-month sentence - the same amount of time Assange has served in Belmarsh high-security prison while fighting extradition to the US.

The plea deal still needs to be rubber-stamped by a federal judge - but if approved, it would give him credit for time served.

He would then be officially released from US custody and would be able to make the 3,500-mile journey south to Sydney.

In recent months, President Joe Biden had hinted at a possible deal being pushed by officials in the Australian government to return Assange to back to his homeland.

Australia's Prime Minister Anthony Albanese today said there was 'nothing to be gained by his continued incarceration and we want him [brought] home to Australia'.

He added: 'I have been a very clear... that regardless of the views that people have about Julian Assange and his activities, the case has dragged on for too long'.

An Australian government spokesperson said: 'Prime Minister Albanese has been clear - Mr Assange's case has dragged on for too long and there is nothing to be gained by his continued incarceration.'

MailOnline has contacted the embassies in London for the US, Sweden, Ecuador and Australia for comment on Assange's release.

Assange was eventually forced to leave the embassy after relations between him and officials broke down

Despite the allegations of horrific treatment at the hands of the Ecuadorian embassy, he was dragged out by the Met Police in 2019 during Operation Pelican, and jailed for skipping bail

'Julian Assange is free': WikiLeaks' post in full 

JULIAN ASSANGE IS FREE

Julian Assange is free. He left Belmarsh maximum security prison on the morning of 24 June, after having spent 1901 days there. He was granted bail by the High Court in London and was released at Stansted airport during the afternoon, where he boarded a plane and departed the UK.

This is the result of a global campaign that spanned grass-roots organisers, press freedom campaigners, legislators and leaders from across the political spectrum, all the way to the United Nations. This created the space for a long period of negotiations with the US Department of Justice, leading to a deal that has not yet been formally finalised. We will provide more information as soon as possible.

After more than five years in a 2x3 metre cell, isolated 23 hours a day, he will soon reunite with his wife Stella Assange, and their children, who have only known their father from behind bars.

WikiLeaks published groundbreaking stories of government corruption and human rights abuses, holding the powerful accountable for their actions. As editor-in-chief, Julian paid severely for these principles, and for the people's right to know.

As he returns to Australia, we thank all who stood by us, fought for us, and remained utterly committed in the fight for his freedom.

Julian's freedom is our freedom.

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Assange had faced 18 counts from a 2019 indictment for his role in the WikiLeaks data breach. It carried a maximum of up to 175 years in prison, though he was unlikely to be sentenced to that time in full.

Assange was indicted during former President Donald Trump's administration over the mass release of secret US documents, which were leaked by Chelsea Manning, a former US military intelligence analyst who was also prosecuted under the Espionage Act.

Officials in the US had alleged that Assange goaded Manning into obtaining thousands of pages of unfiltered US diplomatic cables.

US prosecutors claimed that the cables were not only embarrassing but more importantly potentially endangered confidential sources. Many contained top secret information regarding Iraq war-related activity reports and information related to detainees held at Guantanamo Bay.

The trove of more than 700,000 documents included diplomatic cables and battlefield accounts such as a 2007 video of a US Apache helicopter firing at suspected insurgents in Iraq, killing a dozen people including two Reuters journalists in a video that was released in 2010.

The charges against Assange sparked outrage among his many global supporters who have long argued that Assange as the publisher of Wikileaks should not face charges typically used against federal government employees who steal or leak information.

Many press freedom advocates have argued that criminally charging Assange represents a threat to free speech.

But is was for alleged sex crimes that he was first arrested, in Britain in 2010. Officials in Sweden obtained a European arrest warrant after two women accused him of offences, one of rape and one of molestation, following a speaking trip to the country.

Assange spent years fighting against extradition to Sweden.  His supporters alleged the allegations were drummed up to enable his detention so he could be extradited to America over the leaks. 

So in 2012 when his final appeals were exhausted, instead of fighting to clear his name, he breached his UK bail and fled into London's Ecuadorian embassy to seek asylum.

In the agreement, prosecutors will look for a 62-month sentence - the same amount of time Assange has served in a high-security prison in London while fighting extradition to the US Assange is pictured in April 2019

Assange has been detained in one of the UK's most high-security prisons since April 2019. He is pictured here in May 2019

Belmarsh Prison in London, where Julian Assange has been held since April 2019

 Stella Assange, wife of Julian Assange, co-founder of WikiLeaks, speaks during a protest in Castello square in Milan last week 

He stayed there for seven years, until Sweden dropped the rape charge against him.

Swedish prosecutors said in 2019: 'The reason for this decision is that the evidence has weakened considerably due to the long period of time that has elapsed since the events in question.'

Eva-Maria Persson, the deputy director of public prosecution at the time, said: 'I would like to emphasise that the injured party has submitted a credible and reliable version of events.

'Her statements have been coherent, extensive and detailed; however, my overall assessment is that the evidential situation has been weakened to such an extent that that there is no longer any reason to continue the investigation.'

Assange was eventually forced to leave the embassy after relations between him and officials broke down, with one even accusing him of smearing faeces on the walls - a claim which was stringently denied by his supporters.

His team alleged that throughout his time at the embassy, he was subjected to inhumane conditions.

Dr. Sondra Crosby, an associate professor of medicine and public health at Boston University and an expert on the physical and psychological impact of torture, was tasked with assessing Assange in 2018.

According to the Intercept, she wrote in an affidavit she gave to the United Nations Commission on Human Rights and the Inter-American Commission on Human Rights:

'Mr. Assange's situation [inside the embassy] differs from a typical prisoner in a conventional prison.

'In fact, his position is worse than a conventional prison in many respects. His confinement is indefinite and uncertain, which increases chronic stress and its myriad of chronic physical and serious psychological risks, including suicide.'

Despite the allegations of horrific treatment at the hands of the Ecuadorian embassy, he was dragged out by the Met Police in 2019 during Operation Pelican, and jailed for skipping bail.

But at the same time, US authorities were indicting him over the WikiLeaks data breaches.

Julian Assange's lengthy fight against US extradition 

August 2010: An arrest warrant is issued for Assange over two separate allegations - one of rape and one of molestation - after he visits Sweden for a speaking trip. He is questioned by police in Stockholm and denies the allegations.

November 2010: Stockholm District Court approves a request to detain the WikiLeaks founder for questioning on suspicion of rape, sexual molestation and unlawful coercion. An international arrest warrant is issued by Swedish police through Interpol.

December 2010: Assange presents himself to London police and appears at an extradition hearing where he is remanded in custody. He is later granted conditional bail at the High Court in London after his supporters offer £240,000 in cash and sureties. US President Donald Trump calls for the death penalty for Assange.

February 2011: District Judge Howard Riddle rules that Assange should be extradited to Sweden.

November 2011: Assange loses a High Court appeal against the decision.

May 2012: The UK Supreme Court upholds the High Court decision.

June 19, 2012: Assange enters the Ecuadorian embassy in London, requesting political asylum. A day later, Scotland Yard confirms he will be subject to arrest for breaching his bail conditions.

June 2013: Assange says he will not leave the embassy even if sex allegations against him are dropped, because he fears moves are under way to extradite him to the US.

July 2014: Assange loses a legal bid to have an arrest warrant issued in Sweden cancelled.

August 13, 2015: Swedish prosecutors drop investigations into some of the sex allegations against Assange due to time restrictions. The investigation into suspected rape remains active.

October 12, 2015: The Metropolitan Police end their 24-hour guard outside the Ecuadorian embassy. It concludes a three-year police operation that is estimated to have cost more than £12 million.

September 16, 2016: Sweden's Court of Appeal rejects a bid by Assange to have his sex assault warrant dropped.

October 2016: WikiLeaks publishes Democratic National Committee emails to the political benefit of Mr Trump, who remarks during his campaign: 'I love WikiLeaks'.

November 14, 2016: Assange is questioned for two days at the Ecuadorian embassy in the presence of Sweden's assistant prosecutor, Ingrid Isgren, and police inspector Cecilia Redell.

May 19, 2017: An investigation into a sex allegation against Assange is dropped by Sweden's director of public prosecutions.

August 15, 2017: Assange is allegedly offered a deal to avoid extradition in exchange for revealing the source of hacked Democratic Party emails to end speculation over Russian involvement.

December 2017: It is claimed that unnamed US figures who have been paying a security contractor to bug Assange in the Ecuadorian embassy have discussed a desperate plan to kidnap or poison him.

August 9, 2018: The US Senate Committee asks to interview Assange as part of its investigation into alleged Russian interference in the 2016 presidential election.

September 27, 2018: Assange steps down as editor of WikiLeaks.

January 23, 2019: Lawyers for Assange say they are taking action aimed at making Mr Trump's administration reveal charges 'secretly filed' against him.

April 11, 2019: Assange is arrested after the Ecuadorian government withdraws his asylum, blaming his 'repeated violations' of 'international conventions and daily-life protocols'. He is found guilty of breaching the Bail Act and remanded in custody at Belmarsh Prison.

May 1, 2019: Assange is sentenced to 50 weeks' imprisonment by Southwark Crown Court. He continues to be held on remand in Belmarsh from September after serving the custodial sentence.

November 19, 2019: The alleged rape investigation is discontinued.

February 24, 2020: Assange faces an extradition hearing at Woolwich Crown Court, where his representatives argue he cannot legally be handed to the US for 'political offences' because of a 2003 extradition treaty. 

March 25, 2020: Assange appears via video link at Westminster Magistrates' Court, where he is refused bail amid the coronavirus crisis.

June 24, 2020: The US Department of Justice issues an updated 18-count indictment over Assange's alleged role in 'one of the largest compromises of classified information in the history of the United States'.

September 7, 2020: Assange's extradition hearing resumes at the Old Bailey.

January 4, 2021: A judge at the Old Bailey rules that Assange cannot be extradited to the United States.

August 11, 2021: The US government is allowed by the High Court to expand the basis of its appeal against the judge's decision not to extradite Assange.

December 10, 2021: The US government wins its High Court bid to overturn the judge's decision not to extradite Assange.

December 23, 2021: Assange's partner says lawyers have started the process towards a Supreme Court appeal over his extradition to the US.

2022

March 14, 2022: Assange is denied permission to appeal against the High Court's decision in December 2021 to extradite him to the US, the Supreme Court confirms. 

April 20, 2022: Westminster Magistrates' Court formally issues an extradition order, meaning Home Secretary Priti Patel is now responsible for deciding whether to approve the extradition, with two months to make her decision.

June 17, 2022: Ms Patel signs the extradition order. Assange has the usual 14-day right to appeal.

July 1, 2022: Assange lodges an appeal against a decision to extradite him to the United States.

November 30, 2022: Australia's Prime Minister Anthony Albanese says he recently told US President Joe Biden's administration to end the prosecution of Assange.

April 10, 2023: A letter to the US attorney general is signed by 35 parliamentarians calling for extradition proceedings to be dropped against Assange on the fourth anniversary of his detention at Belmarsh Prison.

June 9, 2023: Assange loses latest extradition appeal bid.

January 10, 2024: The lawyer for Assange says the WikiLeaks founder's life 'is at risk' if his final appeal against his extradition to the US fails.

March 26, 2024: Two judges at the High Court decline to dismiss or grant Assange's bid for an appeal, giving the US authorities three weeks to provide 'satisfactory assurances'.

April 17, 2024: The two judges confirm the US authorities have provided an assurance to the court, meaning a decision on Assange's appeal bid will be considered at a hearing in May.

June 25, 2025: Julian Assange flies out of London after reaching a plea deal with US prosecutors.