"yes, it's the end of the year again. After Ling Zhan repeated Jia Wei's words, he said to Jia Wei and Qi Zhibin after a little silence: "Okay, start the investigation of the extraordinarily large armed robbery case named 1.12 by the Ministry of Public Security twenty-four years ago, and you and Xiao Qi will be responsible for it." ”

"Yes. ”

After Ling Zhan said this, Qi Zhibin finally understood why in this unified provincial deployment of the raid to rectify social order, the bureau would arrange for the serious crime team to temporarily put aside the work at hand and participate in the purpose.

The case that occurred 24 years ago, the armed robbery of the Xingyue jewelry store, resulting in the death of two security guards, was the largest unsolved criminal case in the province under the supervision of the Ministry of Public Security. As early as when Qi Zhibin was a student at the police university, he had already read the general materials of the case.

The suspect not only succeeded in stealing up to 1.8 million pieces of jewelry from Xingyue Jewelry Store, but also shot them in order to kill them when he had already controlled the two mall security guards.

However, there are very few clues left for the police afterwards. To this day, Qi Zhibin still remembers very clearly that the only thing the suspect left at the scene of the crime was a shoe print with a "playboy" mark, a size 39 or 40 shoe print, a military packing belt, a dagger with a tiger bone as a handle, a bullet case numbered 52.22 without rifling, a rifled standard pistol bullet, a pair of insulated rubber gloves, and a homemade silencer filled with an electric razor cover net.

Due to the relatively backward scientific and technological means at that time, video surveillance was far less common than it is now, so the provincial public security department set up a task force for the first time could only focus on these limited clues, respectively, sent an array of elite soldiers to investigate. A lot of work has been done and a lot of effort has been put into this, but the results are very disappointing.

The first is to investigate the sales of "Playboy" men's size 39 or 40 shoes. Since the brand's shoes were sold nationwide, they ended up getting nothing. It can only be inferred from this that the suspect should be between 165 and 170 cm tall.

The second is that military packing belt. The members of the task force have been to regular forces, including special forces, scout units, and armed police forces, to conduct field investigations. As a result, that kind of military packing belt is not only used by the army, but also often flows out of society, and there is no way to find out. The only small gain was that when the task force described the suspect's crime process to the people in the army, the other party gave a positive answer - the suspect's level of climbing in and out of the mall was too unprofessional, and he was definitely not a specially trained retired person in the army.

Third, for the dagger with the handle of the tiger bone, the task force specially found a biologist to conduct genetic testing on the tiger bone on the handle. It was determined that the tiger bones came from the Indochina tiger, which generally lives in the mountainous forests of eastern India, bordering Vietnam and Cambodia. In this regard, the serious case team determined that the dagger may have come from China and Vietnam and the Sino-Burmese border, but the two borders are more than 3,000 kilometers long, and the scope is too wide and too large, and the cadres and criminal investigation experts who went to investigate can only return in vain.

The fourth is the unrifled shell number 52.22. Since this numbered bullet was produced in Vietnam in the late sixties and early seventies of the last century, the former Soviet Union supported the production of such bullets, and there are still a large number of stocks in Vietnam today. And it has never been introduced in China. In this way, this shell once again drew the attention of the task force to the Sino-Vietnamese border. However, like the dagger with the tiger bone handle, it is also impossible to find. The only takeaway was that a closer examination of the firing marks at the primer of the cartridge case revealed that although the bullet was from the former Soviet Union, the pistol was supposed to be a homemade pistol.

The fifth is a warhead with rifling. Although this bullet was finally determined to be a bullet used in a domestic standard pistol, the number of the pistol could not be found based on a single bullet, so it was naturally impossible to trace the source of the firearm. It can only be inferred from this bullet that the suspect had not only a homemade pistol but also a standard pistol.

The sixth is the pair of insulated rubber gloves. After the investigation and understanding of the manufacturer by the members of the task force, the sales market of this type of glove is six provinces and one city in East China. In this regard, the special case group can basically lock the origin of the suspect within such a huge scope as six provinces and one city in East China.

The seventh is the silencer that uses an electric shaver mesh as a filler. Since most of the similar electric shaver covers are from private enterprises in Fuyuan City, and every 100 are sold as a package. Therefore, the investigation of the origin of the cover net, which only has a dozen pieces in the silencer, cannot obtain valuable clues. The task force could only deduce from the homemade pistol and the homemade silencer that the suspect should have a certain amount of mechanical knowledge, and have certain turning skills, or even a worker engaged in machining.

Based on the results of the investigation of the above seven clues, the only information that the special case team could obtain at that time was the following four very general points for the suspect in the 1.12 extraordinarily large armed robbery case 24 years ago, and could not even outline a general outline of the suspect.

1. The suspect is a native of six provinces and one city in East China.

2. The suspect is a male, between 165 and 170 cm tall, with a thin body and a certain ability to climb.

3. The suspect was in possession of two pistols. One is a homemade bullet produced in the former Soviet Union using the 52.22 number. The other is a standard domestic pistol.

Fourth, the suspect may be a worker engaged in machining.

However, since the 1.12 massive armed robbery 24 years ago, the suspect has not been silent for long. Just three years later, the suspect again carried out a armed robbery of the Fumanjia supermarket in Jiangjun City. Due to the fact that there were many security guards on duty that night, the suspect was discovered by the patrol security guard, and after shooting and injuring a mall security guard, he had to flee along the elevator shaft that slipped into the mall.

Later, when the police inspected the scene, some physical evidence left by the suspect was found again - a homemade gun chamber also contained an unfired 52.22 bullet, a 52.22 bullet casing left after injuring a security guard, two homemade earth grenades, a hat woven with black thread worn by an elderly person, and a 20-meter-long nylon rope used by the suspect to enter and exit the mall.

The successful merger of this case with the 1.12 case lies in the key clues of the homemade pistol left at the scene by the suspect, the homemade silencer filled with electric razor cover net, and the number 52.22 bullet used. It is not difficult for the police to understand why the suspect left a large number of tools of crime such as homemade pistols at the scene, which is nothing more than to throw away all the objects that are easy to arouse suspicion in order to escape smoothly.

The suspect's crime brought a certain surprise to the police. From the two homemade earth grenades, a relatively complete but not clear fingerprint was detected. It can basically be concluded that it was left behind by the suspect when he was making the earth grenade. It's just that at that time, it was not compared in the national fingerprint database.

After the second unsuccessful attempt, another seven years, that is, 14 years ago, the suspect committed the crime again. The target is still a jewelry counter at a supermarket in the city of Generals. This time, the suspect still failed to succeed, as he did last time. However, the suspect managed to escape again after injuring a security guard with a standard pistol.

It's just that with the great progress of science and technology in the past decade, the police successfully extracted a male DNA information from a pair of knee pads and a pair of black pants worn by a little girl left by the suspect at the scene.

It was inferred from the little girl's pants that the suspect should have been married and had a five or six-year-old daughter. According to the legal age of marriage stipulated in the national marriage law, the police can roughly conclude that the age of the suspect should be around 30 years old.

In this way, two more characteristics of the suspect were added to the four characteristics of the suspect summarized by the police after the 1.12 case:

Fifth, the suspect is around 30 years old.

Sixth, the suspect is married and has a daughter of five or six years old.

Twelve years ago, when the suspect attempted to commit the crime for the fourth time, the police made another major discovery - from the section of the suspect left at the scene, he wanted to use high-voltage electricity to attack the mall security guards, two copies of DNA information, a man and a woman, were extracted, and the relationship between the two was confirmed to be father and daughter. This corroborates the fifth and sixth pieces of information obtained by the police after the suspect committed the crime for the third time. At the same time, the police also kept a relatively vague video of the crime scene.

In particular, the time of the fourth crime occurred on the first day of the Lunar New Year, so the police made the following judgment: the suspect was either from Jiangjun City, or someone with a major blood relationship with Jiangjun City. Since then, the origin of the suspect has suddenly shrunk from the original six provinces and one city in East China to Jiangjun City and its surrounding areas.

"Little comrade, can you sum it up?"

When Jia Wei took down the thick file of the three cases that were merged on 1.12 and later, and the two read it carefully from beginning to end again, without Jia Wei's reminder, Qi Zhibin had already written on the paper:

First, the fingerprints and DNA of the suspect were obtained, but they were not compared, indicating that the suspect had no criminal record.

Second, from the surveillance video left by the suspect's fourth crime that year, no suspicious person worthy of the police's suspicion was found.

Third, the suspect is from General City or the surrounding area.

Fourth, the suspect is between 165~170cm tall, aged 412, married, and has a daughter of 17 or 8 years old.

Fifth, the suspect is thin and good at climbing.

Sixth, the suspect understands the construction of firearms and understands how grenades work.

Seventh, the suspect may be a person who is engaged in machining or related work.

Eighth, the suspect also had a standard pistol in his hand.

There are three rivers and five lakes

(End of chapter)