Speaking on BBC Radio 4’s Today programme on Friday, Abbott said: “If you remember the Gary McKinnon case, the Americans insisted on extraditing him. He had done this massive computer hack, but his real crime was to have embarrassed the American military and security service.
“In the end the then home secretary, Theresa May, blocked his extradition on what she said were human rights grounds. We think there may be human rights grounds in relation to Assange.”
Abbott described the allegations facing Assange from two women in Sweden as “serious”, but said charges were never brought.
She said: “If the Swedish government wants to come forward with those charges I believe that Assange should face the criminal justice system.”
But she added: “It is not the rape charges, serious as they are, it is about WikiLeaks and all of that embarrassing information about the activities of the American military and security services that was made public.
“He is at the very least a whistleblower and much of the information that he brought into the public domain, it could be argued, was very much in the public interest.