The death of Aamir Cheema in German police custody remains a mystery as Pakistani investigators complained of ‘non-cooperation’ from German authorities, Senate Functional Committee on Human Rights was told during a meeting on Thursday. Tariq Khosa, FIA additional director, who went to Germany to investigate Cheema’s death, told the committee that Cheema’s wrists bore marks of having been tied with a rope, adding that there was also a deep cut on his neck along with signs of a noose being tied around his neck. “We haven’t finalised our findings and are waiting for the answers to a questionnaire sent to the German authorities,” Khosa said. He said the questionnaire was prepared after the German authorities failed to cooperate with the Pakistani investigators. He said the Pakistani investigators were not allowed to meet German investigators, officials of Justice Department or Cheema’s cellmate.