97例杀人后自杀案件法医学特点分析

Forensic analysis of 97 homicide-suicides cases in Shanghai

目的分析97例杀人后自杀案件特点,为同类案件的法医现场勘验及法医学鉴定提供参考和借鉴。方法收集上海市公安局物证鉴定中心参与鉴定的97例杀人后自杀案件,共死亡207人,其中加害人98名,被害人109名。对加害人、被害人双方的性别、年龄、关系及案发场所、死亡方式等方面的资料进行分析。结果上海地区杀人后自杀案件涉及的死者多为18~59岁青壮年,相互之间多熟识,起因多为家庭矛盾及感情纠纷;被害人女性为主,加害人男性居多;案发场所多为同一室内环境或相邻室内外;杀人多选择机械性暴力手段,而自杀则多采用自缢和高坠。结论上述关于此类案件的特点有助于法医在鉴定过程中对杀人后自杀案件做出快速、准确地判断。

Objective Analyze the features of 97 homicide-suicides cases in Shanghai in order to provide reference for crime scene investigation and forensic expertise. Methods Collect 97 homicidesuicides cases that happened from 2001 to 2011 in Shanghai. The dead were totally 207 in cases above,98 offenders and 109 victims. Retrospectivc study was used to analyze sex composition,age,and relationship of both offenders and victims,as well as criminal scenes and lethal way in such cases. Results The dead in homicide-suicide cases were mostly young adults from 18 ~ 59. Masses of the offenders and victims were acquainted with each other,and causes of crime were usually family conflicts or emotional disputes. The majority of victims were female,while the situation for offenders was opposite. In most cases,the crime scene was in the same indoor place,or in and out of the same building. The way the offenders killing others gave priority to manners with mechanical violence,while the way of suicide were usually apt to hanging and falling from height. Conclusion Features above may contribute to the rapid and accurate judgment on homicide-suicide cases.