• Silke Grabherr, Stephan Johner, Carine Dilitz, Ursula Buck, Martin Killias, Patrice Mangin, and Thomas Plattner.
• Department of Medicine Lausanne, University Center of Legal Medicine, University of Lausanne, Geneva and Lausanne, Lausanne, Switzerland. silke.grabherr@irm.chuv.ch
• Am J Forensic Med Pathol. 2010 Dec 1;31(4):335-49.

AbstractHomicide followed by the suicide of the offender is a well-known phenomenon. In most cases, it takes place in the context of the so-called "family tragedies." A recent series of such family tragedies in Switzerland prompted an intensive debate in the media and the Swiss government concerning the Swiss Weapon Law, in particular the requirement to keep personal army weapons at home. The present study of Homicide-Suicide cases in Switzerland, thus focuses on the role played by guns, especially military weapons, in such crimes. We investigated retrospectively 75 cases of Homicide-Suicide, comprising 172 individuals and spanning a period of 23 years in western and central Switzerland. Our results show that if guns were used in 76% of the cases, army weapons were the cause of death in 25% of the total. In 28% of the deaths caused by a gunshot, the exact type of the gun and its origin could not be determined. Thus, the majority of Homicide-Suicide cases in Switzerland involve the use of guns. The exact percentage of cases were military weapons were involved could not be defined. In our opinion, a stricter weapons law, restricting access to firearms, would be a factor of prevention of Homicide- Suicide cases in Switzerland.

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