Julian Assange, the founder of WikiLeaks, should not be extradited to Sweden for an allegation of rape dating back to 2010, a Swedish court ruled Monday.

The ruling by the Uppsala District Court marks a setback for prosecutors who were hoping to issue a European Arrest Warrant for Assange and request his extradition from the United Kingdom to Sweden, CNN reported.

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The founder of the whistleblower organization is currently in jail in the U.K., where he is serving a 12-month sentence for skipping bail in August 2012 as he fought extradition to Sweden in connection with the same case. Assange has denied the allegations, which also included a second claim of sexual misconduct that can no longer be pursued in criminal court due to the statute of limitations.