It is a fact that one of our delegates was able to enter this camp. […] According to his impression, the camp was a kind of “extensive concentration camp” where the detainees were compelled to do various kinds of work, including work outside the camp. Our delegate told us that he had not been able to discover any trace of installations for exterminating civilian prisoners. This fact corroborates a report which we had already received from other sources, i.e., that for several months past there had been no more exterminations at Auschwitz. At all events, it is not a camp containing exclusively Jews.
Official response by the International Committee of the Red Cross to Roswell McClelland, 22 November 1944 (The delegate, Maurice Rossel, visited Auschwitz on 27 September 1944)