Mohammed Ahmed Mohamed, 27, evaded stringent government surveillance when he disappeared last Friday wearing a burqa. Police are still searching for him.
Mohamed and another man identified as "CF" were detained by Somaliland authorities on January 14, 2011, and held until their removal to the UK on March 13 of that year. Both claim they were unlawfully detained, tortured and mistreated during the detention in Somaliland.
Mohamed had previously been referred to as "MA" in court papers but the anonymity protection was lifted today in preliminary proceedings at Britain's High Court following his disappearance.
The Foreign Office said it was unable to comment on the case.
Home Secretary Theresa May has insisted that Mohamed does not pose "a direct threat" to public safety, but lawmakers have expressed outrage over how he was able to disappear while wearing a government GPS tag.