Sami al-Hajj was working as an Al Jazeera cameraman when he was arrested in late 2001 and sent to Guantanamo Bay.<br /><br />One file in the newly released trove of leaked US military documents shows that al-Hajj, held at Guantanamo for six years, was detained partly in order to be interrogated about the news network.<br /><br />He speaks to Al Jazeera's Nick Clark about the documents.