Disagreements between the Allies meant only one trial was held by the International Military Tribunal (IMT). Other trials were held by the Allies in their own zones of occupation. The Americans held twelve trials, in the same rooms at the Palace of Justice as the IMT. These twelve trials are known as the "Subsequent Nuremberg Trials" or, more formally, as the "Trials of War Criminals before the Nuremberg Military Tribunals" (NMT).