Parliamentary investigators in Berlin have heard evidence from the central witness in an alleged CIA abduction scandal. The man, who claims he was kidnapped with the full knowledge of Germany’s secret service, says he was interrogated in Afghanistan by someone named Sam who appeared to be German.Khaled al-Masri is a German citizen of Lebanese descent. He says he was detained on the Serbian-Macedonian border on suspicion of terrorist activities by the CIA and held for five months in an Afghan jail. Opposition politicians say uncovering Sam’s identity is key to discovering if Germany colluded in the abduction. Hans-Christian Stroebele, deputy leader of the Greens, says there is no evidence the German authorities were actively involved in the kidnapping. He says the question is when they were informed about it. The German intelligence agency, the BND, claims it first heard of the abduction after al-Masri was released in May 2004. In other evidence to the inquiry, a German telecoms manager who was working in Macedonia in January 2004, said he phoned the German embassy there to say he had heard of the arrest of a German citizen. He said an embassy official told him “We know that”.