Matricide and two sexual femicides by a male strangler with a transgender sadomasochistic identity.

While violence against sexual minorities is a well-known phenomenon, sexual homicides committed by men with cross-dressing or transsexual identity are not, because they are relatively few. We report a 23-year follow-up of the case of a transvestite, possibly transsexual, man who killed his mother by strangulation at the age of 20, and later in two separate cases strangled a female victim towards whom he felt sexual desire. He reported being sexually aroused by being strangled himself. The case raises questions concerning legislation which does not allow life-long control of criminals.