The Guardian newspaper in London, National Public Radio and The New York Times are publishing a series of sensitive documents obtained by WikiLeaks.
In the latest dispatch, The Guardian reports that Algerian citizen Adil Hadi al-Jazairi bin Hamlili was working as an informant for British intelligence while operating as a "facilitator, courier, kidnapper and assassin for al-Qaida."
He was arrested in Pakistan in 2003, sent to Guantanamo Bay and was later transferred to Algerian custody.
U.S. intelligence officers who interrogated Hamlili said he withheld "important information" about his alleged terrorist activities from Canadian and British intelligence contacts.
The documents show the Algerian man was recruited by intelligence agencies because of his connections to al-Qaida and its affiliates in Afghanistan and Pakistan.
Khalid Sheik Mohammed, the Pakistani mastermind behind the Sept. 11, 2001, attacks on the United States, allegedly told his interrogators that Hamlili helped plan a number terrorist attacks, including a 2002 attack in Islamabad that killed five, including a U.S. diplomat and his daughter, The Guardian adds.
The report notes that it wasn't clear if Algerian authorities planned to free Hamlili or have him face charges.