China News Network, Nanjing, February 24th (Reporter Shen Ran and correspondent Ning Gongxuan) On the 24th, the Nanjing Public Security Department held a press conference to announce the details of the case of "the murder of a female student in the former Nanjing Medical College (now Southern Medical University)". . According to police, the case involved the police's in-depth application of the latest criminal technology, and cooperated with the Xuzhou police to compare the DNA evidence retained 28 years ago to find the true murderer. During the investigation, the task force did not receive any clues from the victims' brothers and sisters.
On March 24, 1992, the Nanjing Police received an alarm from the former Nanjing Medical College, claiming that the student Lin of the school had disappeared after studying on the evening of March 20. In the afternoon, Lin's body was found in a manhole in the courtyard of the school building. After forensic examination, the deceased was beaten to the head with a blunt device and raped, and then pressed into a manhole to die.
After the incident, the Nanjing Public Security Bureau attached great importance to the mobilization of the police and the whole city. It dispatched hundreds of capable police officers to form a task force. It carried out large-scale visits and investigations for several months. It checked thousands of clues and visited the inspectors. More than 15,000 people, but due to the conditions at the time, the case did not make a breakthrough. The case has also become one of the few major malignant cases in Nanjing and is still one of the homicide cases of national concern.
According to the relevant person in charge of the Nanjing Police, the parents of the deceased go to Nanjing or call the public security organs on March 24 each year to inquire about the progress of the case detection. For many years, the Ministry of Public Security has also paid close attention to this case. The previous party committees of the Provincial Public Security Department and the Municipal Public Security Bureau have always attached great importance to the investigation of the case. The vice governor of Jiangsu Province and the director of the Provincial Public Security Department, Liu Ye, also explicitly requested that the case be supervised. .
In June 2018, the Nanjing Public Security Bureau set up a "3.24" homicide case investigation work leading group. The police were assigned to set up special working classes, fixed personnel, fixed venues, and centralized offices. The requirements of "non-breaking cases and non-withdrawal" were clarified. To a new round of case detection work.
For more than a year, the task force has repeatedly convened symposiums and case studies involving previous comrades of the task force to review and sort out the investigations at that time, and to file and analyze more than 120 cases in the year. The task force also took the initiative to dispatch police officers to more than 10 provinces, including Zhejiang, Jiangxi, Shandong, and Sichuan, and traveled nearly 20,000 kilometers. They conducted in-depth investigations on key personnel and checked the bottom of the key personnel who had not been rejected in the past. At the same time, we will continue to communicate with brother units in the country, the whole province, and key provinces such as Henan and Anhui, and further analyze the case.
On February 19 this year, a major breakthrough was achieved in the case. After the in-depth application of the latest criminal technology, with the cooperation of Xuzhou police, it was clear that there was a suspected major crime among members of the Yi family in Peixian, Xuzhou.
After receiving the report, the police of the task force immediately split into two paths. On the one hand, they rushed to Xuzhou to conduct further inspections. On the other hand, they organized a visit to the family's personnel in Nanjing. On the other hand, they focused on those who meet the age characteristics of the suspects to carry out further work.
On February 23, it was found that the DNA data of Ma Mougang (male, 54 years old, native of Peixian, Jiangsu, a driver of a company in Nanjing) living in a community in Xuanwu District, Nanjing, was completely consistent with the suspect. The police immediately went to Ma's steel house and arrested him. After interrogation, Ma Mougang explained the crime of rape and killing Lin in the former Nanjing Medical College 28 years ago.
Relevant persons in charge of the Nanjing Public Security Bureau said that the main reasons why the case could be resolved after 28 years are as follows: First, after the case, the site inspection work was very careful and meticulous in that year, and key traces of physical evidence were retained, and So far, it has been properly kept and has laid a solid foundation for the detection of today's case. The second is that the main and successive leaders of the Nanjing Public Security Bureau have always attached great importance to the case. Although members of the ad hoc group have been replaced several times, some have retired or even passed away, but The receivers are always persevering, keeping an eye on them, and being unbreakable. Third, they benefit from the in-depth application of modern criminal investigation technology and the establishment of modern new mechanisms to combat crime, as well as the solid criminal foundation work of fraternal public security agencies under the leadership of the Ministry of Public Security.
In addition, the brothers and sisters of the victims who provided information on the Internet provided clues to solve the case, which are pure rumors. The public security organs collect evidence for handling cases in strict accordance with laws and regulations, and strictly protect personal information of citizens. During the investigation of the case, the task force did not receive any clues from the victims' brothers and sisters. (Finish)