The first legalized murders took place at Dachau. (There would never be as many political murders in any of the other, earlier concentration camps than there were in Dachau's first few months.) Sophie Handschuh, the mother of one of the murdered prisoners, filed a formal complaint to find out what had really happened to her son. The resulting prosecution forced Himmler to replace Wäckerle. Himmler chose Theodor Eicke, a fanatical "SS-Oberführer" who had, in March 1933, been committed for evaluation at a psychiatric clinic at the University of Würzburg due to extremely violent behavior. Himmler arranged for Eicke to be released, asking his doctor, Werner Heyde, to talk to Eicke and get him to promise to control himself.