Forensic Science Laboratory, Home Department, Government of NCT of Delhi, Delhi, India.
Amity Institute of Forensic Science, Amity University Noida, Noida, India.
Med Leg J. 2021 Mar;89(1):58-60. doi: 10.1177/0025817220966487. Epub 2021 Jan 21.
Increasing numbers of female victims of violent sexual assaults are being murdered with the aim of concealing the identity of the perpetrator. Proper handling and analysis of evidence is very important in gaining a conviction in many criminal cases. After evidence is collected, due precautions must be taken to ensure that the integrity of the sample is maintained, and chances of contamination are minimised. This paper presents a case study where improper handling of biological evidence led to loss of evidentiary value, and the semen could not be located on the vaginal swabs and victim's garments due to improper preservation of samples. However, the DNA from the nail of a decomposed finger helped identify the victim, and the suspect was apprehended based on the clues given by her family.
越来越多的暴力性侵女受害者被谋杀，目的是隐藏犯罪者的身份。在许多刑事案件中，正确处理和分析证据对于定罪非常重要。证据收集后，必须采取适当的预防措施，以确保样本的完整性，并尽量减少污染的机会。本文介绍了一个案例研究，其中生物证据的不当处理导致证据价值丧失，由于样本保存不当，阴道拭子和受害者衣物上的精液无法定位。然而，从分解手指的指甲中提取的 DNA 有助于确定受害者身份，根据她家人提供的线索，嫌疑人被逮捕。
