This article—based on a national data set (N = 173)—focuses on extrafamilial sexual homicides and their spatial mobility. The study combines the location of the crime scene and the offenders and victims’ residences in mobility crime triangles. The findings reveal that most of the homicides fall within the categories of offender mobility and total mobility. Our results show the validity of the distance decay function, with over 70% of homicides occurring within 10 km of the offender’s residence. It appears that under certain circumstances, sexual murderers perceive their surroundings as a safe place to commit a homicide. Finally, the study proposes a four-category spatial typology of sexual homicide.

中文翻译：

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性杀人罪的流动模式分析

本文基于国家数据集（N = 173），重点介绍了家庭外性杀人案件及其空间流动性。该研究结合了犯罪现场的位置以及在流动性犯罪三角中的罪犯和受害者的住所。调查结果表明，大多数凶杀案都属于犯罪者流动性和全部流动性。我们的结果表明距离衰减函数的有效性，超过70％的凶杀案发生在犯罪者居住地的10公里范围内。在某些情况下，性凶手似乎将周围的环境视为凶杀的安全场所。最后，该研究提出了一种四类性杀人罪的空间类型。