WikiLeaks founder Julian Assange has pleaded guilty on one count of conspiring to obtain and disclose classified US documents, according to media reports from the US district court in Saipan.
When asked whether he would plead guilty or not guilty, Assange said "Guilty to the information," the Guardian reported.
Assange arrived on the island of Saipan, a foreign territory of the United States in the Pacific, on Wednesday after it was revealed a day earlier that he had reached a plea deal with the US.
The WikiLeaks founder had been expected to plead guilty as part of a plea deal struck with the US in the long-running dispute over his extradition and be sentenced to more than five years in prison.
The sentence corresponds to the length of time the whistleblower has already spent in a high-security prison in London.
The 52-year-old is then expected to travel on to his homeland in Australia.
Washington accuses Assange of stealing and publishing secret material from military operations in Iraq and Afghanistan with the whistleblower Chelsea Manning, thereby allegedly endangering the lives of US intelligence sources and others.