However, before this plan was ready, people in the camp's resistance movement found out that the Nazi guards were going to murder the "Sonderkommando" on 7 October 1944. The resistance members warned the "Sonderkommando", who attacked the guards with two machine guns, axes, knives and grenades. They killed about 3 guards and hurt about 12 others. A total of 451 "Sonderkommandos" were killed on this day. Some died fighting the camp's guards. Some did not, and were executed later that day by the Nazis.