 Nicole later insisted that her father used his radio solely to listen to music.However, Copin remarks that he "apparently supported local resistance efforts," and Davis concedes that this was at least possible, though not proven.Eyewitnesses in the camp report that the Japanese military police, the Kempeitai, interrogated Groslier, tortured him, and returned him to his cell dead or dying on the morning of June 18, 1945.