Assange faces 18 counts in the U.S. including conspiring to hack government computers and violating espionage law.
He could spend decades in prison if convicted.
On Monday (October 21), Wikileaks editor-in-chief Kristinn Hrafnsson said outside the courthouse that the time Assange has spent in isolation is "taking its toll." Assange was dragged from the Ecuadorian embassy in April after seven years and given a 50-week jail term for skipping bail.
That sentence was completed but he remains in prison while his extradition case continues.