Sami al-Hajj was working as an Al Jazeera cameraman when he was arrested in late 2001 and sent to Guantanamo Bay.
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.
He speaks to Al Jazeera's Nick Clark about the documents.
