Assange, 44, is wanted by Swedish authorities for questioning over allegations, which he denies, that he committed rape in 2010.
An Australian computer hacker who enraged US authorities by publishing hundreds of thousands of secret US diplomatic cables, he has been holed up in the embassy since June 2012 to avoid the rape investigation in Sweden.
He says he fears further extradition to the United States, where there has been a criminal investigation into the activities of Wikileaks.
