A United Nations panel has ruled that Wikileaks founder Julian Assange is being "unlawfully detained," BBC News reported Thursday. Assange has been holed up in London's Ecuadorian embassy since 2012, when he sought asylum there to avoid extradition to Sweden over sexual assault allegations, which he denies. Assange asked the U.N.'s Working Group on Arbitrary Detention, based in Geneva, to look into his case. He tweeted late Wednesday that he would accept arrest if the U.N. ruled against him.