An al Qaeda "assassin" accused of bombing Christian churches and a luxury hotel in Pakistan was working for British intelligence at the same time, according to leaked files. Skip related content
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The claim about Adil Hadi al Jazairi Bin Hamlili is made in secret reports on detainees at the US military's Guantanamo Bay prison camp obtained by the whistleblowing website WikiLeaks.
The Algerian, who was captured in Pakistan in 2003, was described by interrogators as a "facilitator, courier, kidnapper, and assassin for al Qaeda".
They also believed he had withheld important information from Canadian and British intelligence and (was) a "threat to US and allied personnel in Afghanistan and Pakistan".
The files, handed to The Guardian and Daily Telegraph by WikiLeaks, also indicate at least 35 terrorists held at Guantanamo had been radicalised by extremist preachers in the UK.
Abu Qatada and Abu Hamza are identified in the documents as having recruited and sent dozens of extremists from all over the world to fight against the West in Pakistan and Afghanistan.
The revelations come after WikiLeaks released more than 700 secret files documenting the inner workings of the Guantanamo Bay detention centre in Cuba.
It also appears the US government suspected the BBC of being a "possible propaganda media network" for al Qaeda after a phone number for the World Service was found in the possession of several suspected terrorists.
But a spokeswoman for the corporation said: "Independence and impartiality are at the heart of all BBC World Service output.
"The service has interviewed representatives of organisations from all sides involved in the Afghan conflict so it would not be surprising that a number believed to relate to the BBC Pashto service was in circulation."