. >> sol of the libyans returned to tripoli, and we tracked down ziad hashem, whose name abdel-hakim belhaj was forced to give up. ziad hashem was arrested and the information used came from libya. >> translation: many times during the question in paddington green police station they'd accuse me of terrorism. they brought all the documents, many left out in the open. it was clear they were from libya. ziad hashem says after his release from prison he was placed under house arrest, and his family suffered from the treatment by british police. >> translation: they could search when they wanted and they chose to some at night, knocking ard on the door. >> ziad hashem is port of another lawsuit against the british government. something he is hoping to reveal was the flow of information between the libyan intelligence agencies. the british government says it's committed to investigating allegations of mistreatment that it stands against torture and never asked any other country to carry it out. >> to watch more of our investigation watch "people in power", as we examine the relationship b