No attempts were or have been made to trace any further victims of Christie, such as examining records of missing women in London during his period of activity. Michael Eddowes suggested that Christie had been in a perfect position, as a special police constable during the war, to have committed many more murders than have been discovered. On the other hand, historian Jonathan Oates considers it unlikely Christie had any further victims, arguing he would not have deviated from his standard method of killing in his place of residence.