1992年3月20日，南京醫科大學女學生林某在教學樓自習時慘遭毒手。當晚，她被兇手猛擊頭部後陷入昏迷，兇手趁機對其實施性侵。更殘忍的是，兇手隨後將尚有一絲氣息的林某按入天井窒息而死，並將屍體藏入下水道。直到四天後，遺體才被發現。

林某體內曾留下兇手的DNA，但由於當時技術有限，儘管警方掌握大量證據，案件長期未能破獲。南京警方甚至曾篩查超過1.5萬人，案件也在二十多年裡持續偵辦。令人震驚的是，兇手麻繼剛案發後並未逃離現場，而是一直住在距離案發地僅5公里的地方。更具諷刺意味的是，在這28年間，麻繼剛過著外人看來幸福美滿的生活。不僅結婚生子，還育有一女，如今已上大學。他甚至成為南京某家生物科技公司的股東，積累不菲的財富，並且在鄰居間口碑甚好，與其冷血兇殘的本性完全不符。

2020年2月19日，案件出現重大突破。警方在一次DNA比對中發現，徐州沛縣一名男子麻某的DNA與1992年南京醫科大學命案兇手的DNA具有高相似性，推測兇手可能是其親屬。警方隨後以核酸檢測為名，不動聲色地對麻繼剛進行口腔拭子的DNA採樣，結果確認兇手正是麻繼剛本人。很快，警方在麻繼剛家中將其逮捕。面對鐵證，麻繼剛供認28年前的強姦殺人罪行。儘管兇手最終被繩之以法，但年僅22歲的她未能見證正義的到來。這起案件既反映當年技術手段的限制，也讓人再次思考，如何更高效地利用現代科技和資源，為受害者討回公道，避免更多遺憾的發生。

The 1992 Nanjing Female University Student Case: The Killer Caught 28 Years Later

On March 20, 1992, Lin, a female medical student at Nanjing Medical University, was brutally murdered while studying alone in a classroom building. That evening, the killer struck her head, rendering her unconscious, and then sexually assaulted her. In an even more heinous act, the killer pressed Lin, who was still barely alive, into a light well, causing her to suffocate to death. He subsequently hid her body in a sewer. Her remains were not discovered until four days later.

DNA evidence left in Lin’s body pointed to the perpetrator, but due to the technological limitations of the time, the case remained unsolved for many years despite substantial evidence. The Nanjing police screened over 15,000 people and continued investigating the case for over two decades. Shockingly, the killer, Ma Jigang, did not flee after the crime but instead lived just 5 kilometers from the crime scene.

A "Double Life" of Irony

Even more ironically, Ma lived a seemingly happy and prosperous life over the past 28 years. He married and had a daughter who is now in university. Ma even became a shareholder in a biotech company in Nanjing, accumulating significant wealth and earning a good reputation among his neighbors—a stark contrast to his cold-blooded and violent nature.

A Breakthrough Through DNA Technology

On February 19, 2020, the case saw a major breakthrough. The police discovered through a DNA comparison that a man named Ma from Pei County, Xuzhou, had DNA highly similar to that of the perpetrator in the 1992 Nanjing Medical University murder case. It was inferred that the killer might be one of Ma's relatives. Under the guise of a nucleic acid test, the police discreetly collected a buccal swab from Ma Jigang. DNA testing confirmed that Ma was indeed the perpetrator.

Soon after, the police arrested Ma at his home. Confronted with irrefutable evidence, he confessed to the rape and murder committed 28 years earlier.

Justice Delayed but Not Forgotten

Although the killer was finally brought to justice, Lin, who was only 22 years old, could never witness the resolution of the case. This tragic incident underscores the technological limitations of the past and prompts reflection on how modern advancements in science and resources can be more effectively leveraged to seek justice for victims and prevent such regrets from recurring.

照片:DALLE3