US indictment accuses him of helping crack a password stored on Department of Defence computers in 2010
British police, acting on behalf of Washington, arrested the WikiLeaks founder at Ecuador's embassy in London
Police said they arrested Assange after being 'invited into the Ecuadorean embassy'
In connection with what WikiLeaks says were secret criminal charges filed by the Trump administration
Prosecutors reveal existence of sealed indictment in a court filing of an unrelated case
Ecuador government issued no immediate statement in response
The Wikileaks founder has been holed up at the embassy since 2012
Arjen Kamphuis, 47, Dutch cyber security expert has been missing since August 20
Equador spent millions of dollars to protect and monitor Assange's activities
The ruling means Assange remains in a legal and diplomatic impasse, with no way out of the embassy