Julian Assange has been charged with 18 criminal charges by the US government for conspiring with Chelsea Manning.
A federal grand jury returned the indictment against him in Virginia on Thursday afternoon.
The WikiLeaks founder is accused of working with Manning, a former soldier, to obtain and disseminate sensitive information.
He was already being charged with one count for conspiring with Manning. Now, he faces 170 years behind bars.
The US has until June 11 to submit its case to the UK for it to extradite Assange.
Wikileaks co-founder Julian Assange, in a prison van, as he leaves Southwark Crown Court in London on May 1. He is now facing charges in the US
Then, the process could take months or even years. Sweden is also appealing for him to return there on sexual assault charges.
Assange is in London, fighting extradition to the US, after being expelled from the Ecuadorian embassy where he had been taking refuge for the last seven years.
He is completing a 50 week jail sentence in the UK for violating bail conditions for his Swedish sexual assault arrest.
He fled to London, taking asylum in the Ecuadorian embassy, in 2012.
Together, US prosecutors say he revealed the names of intelligence sources in Afghanistan, China, Iran, Iraq and Syria among other breaches by uploading a haul of information to WikiLeaks that Manning had access to.
In its announcement on Thursday, the U.S. Attorney’s Office for the Eastern District of Virginia said: ‘In late 2009, Assange and WikiLeaks actively solicited United States classified information, including by publishing a list of “Most Wanted Leaks” that sought, among other things, classified documents.
‘Manning responded to Assange’s solicitations by using access granted to her as an intelligence analyst to search for United States classified documents, and provided to Assange and WikiLeaks databases containing approximately 90,000 Afghanistan war-related significant activity reports, 400,000 Iraq war-related significant activities reports, 800 Guantanamo Bay detainee assessment briefs, and 250,000 U.S. Department of State cables. ‘
Chelsea Manning was released from jail after having her prison sentence commuted by president Obama in 2017. She spent four years in prison for it