"The mobile phone, which was found near the scene of the crime, could it be left by the suspect? Liu Qingyu asked with some excitement.

You must know that although it is now possible to determine the appearance and age of the suspect, but because the technical level is not developed enough, it is impossible to complete the database comparison to determine the suspect's ID card by scanning the suspect's appearance, and can only confirm the suspect's information after database comparison such as DNA and fingerprints have been registered, so if there are other clues, it is definitely very good news for the entire case.

Thinking of this, Liu Qingyu couldn't help but secretly think: "Now that information technology is so developed, in order to compare it with the information in the database by scanning the physical characteristics of the suspect, and finally determine the suspect, this technology is not very complicated in nature, and the more difficult thing should be that there are too many Chinese populations, if you want to compare the database, I am afraid that the general computer is not competent for the amount of data computing that is so responsible, which is a fundamental reason why this technology cannot be promoted."

However, in order to achieve the goal, in fact, it is not impossible, first, each person's appearance can produce a unique code similar to DNA, even twins or people who look similar can also generate different unique codes by region and date of birth, when the time comes, only need to establish a cloud computing similar data center in each province, and then through the national cloud computing center, the real data computing thing is handed over to the professional department to do, so that the public security departments of various cities and even towns can determine their true identity by scanning the appearance of the criminal suspect anytime and anywhere。

Although the amount of work involved in this project is not small, once it is realized, it will benefit the public security department immensely.

Thinking of this, Liu Qingyu's heart began to constantly calculate, it seemed that he needed to write a report and submit it directly to the Provincial Public Security Department or even the Ministry of Public Security.

Just when Liu Qingyu was thinking in his heart, on the other end of the phone, Cheng Yonggang had already replied: "Director Liu, we have just discovered this mobile phone, and we are currently tracking the owner of the mobile phone, and the owner of this mobile phone has been locked as a girl about 20 years old. ”

Liu Qingyu nodded with satisfaction: "Okay, Lao Cheng, you have done a good job, continue to follow up, and strive to find more clues and information about the suspect as soon as possible." ”

After hanging up the phone, Liu Qingyu fell into contemplation again, because according to his analysis, judging from the old spiciness shown by the suspect at the scene of the crime and the careful choice of the escape route, this should be a veteran, and it stands to reason that there should be no possibility of leaving a mobile phone, an extremely identifiable item at the scene of the crime, but a mobile phone appeared at the scene of the crime, whether the mobile phone was inadvertently left by the murderer, or was it deliberately left by the murderer to spread suspicion, or was it discarded by others at the scene。

Two hours later, Liu Qingyu received Cheng Yonggang's report again: " Director Liu, we have figured out the matter of this mobile phone, the owner of this mobile phone is called Ruan Yuyan, a sophomore female student, this mobile phone was lost when she was shopping more than a week ago, so, according to our analysis, since this mobile phone appeared at the scene, then there are two possibilities, one is that the thief who stole the female college student has appeared near the scene, and the other is that the thief has sold the mobile phone, and the buyer bought the stolen mobile phone from the mobile phone store and appeared at the scene, and according to our investigation and visit to the scene, the vicinity of the crime scene is full of people watching the excitement, and under normal circumstances, it is impossible for someone to throw away the mobile phone when watching the excitement, then the reason why this mobile phone appeared at the scene is that there are two other possibilities, one is that the mobile phone was accidentally or even deliberately discarded at the scene by the suspect, and the other possibility is that the mobile phone was inadvertently dropped from Chen Tianjie when he was killed. ”

Liu Qingyu nodded when he heard this: "Then what happened later, what is going on with this mobile phone." ”

Cheng Yonggang said: " Later, we sent people to visit the most famous mobile phone communication street in our Arashiyama City, and finally confirmed in a small shop that sells and recycles second-hand mobile phones that the lost mobile phone at the scene was sold from their mobile phone store, and this mobile phone was also recovered by them a week ago, the seller is a young man in his 20s, according to him, this young man often comes over with second-hand mobile phones for sale, so it is basically certain that this young man should be a thief, but this young man is not the point, we know through in-depth understanding with the mobile phone store ownerThe person who bought this second-hand mobile phone was a man named Sun Jinxing, about 30 years old, who spoke with a local accent, and later, we took out the wanted warrant to show the mobile phone store owner, and the mobile phone store owner was sure that this person was not wrong. ”

Hearing that Cheng Yonggang confirmed that the mobile phone was really the suspect's, Liu Qingyu was immediately overjoyed in his heart, and immediately asked: "Since the owner of the mobile phone store knows the name of this person, does he know the true identity of this person." ”

Cheng Yonggang immediately said: "I know, he said that this buyer he has had a few faces, he has bought a mobile phone from him before, and he has opened a **, so he knows this person's real name, and he also works in a martial arts school in our Lanshan City, and now we have determined this person's ID card, home address and other information through this person's name, and have sent someone to their house to find it, his daughter-in-law said that he went on a business trip last night, and his daughter-in-law does not know where to go." ”

Liu Qingyu's face suddenly gloomy when he heard this, because if this Sun Jinxing stayed in Lanshan City, then it would be easier for their Lanshan City Public Security Bureau to catch him, but once he left Lanshan City, then it would be difficult to catch him, after all, Huaxia is so big, if you want to find someone who has the intention to hide, then the matter is not so simple.

Liu Qingyu frowned and said: "Okay, Lao Cheng, then your group will immediately follow up along this clue and find the location of the suspect, especially to go to the long-distance bus station, railway station and other transportation hubs to check the identity information of this Sun Jinxing and see if he has left Lanshan City by car." ”

Cheng Yonggang immediately nodded in understanding.

After hanging up the phone, Liu Qingyu immediately called Cui Zhenhua and reported the latest news to Cui Zhenhua.

After Cui Zhenhua heard the news, he immediately rushed to Liu Qingyu's office as soon as possible.

Cui Zhenhua looked at Liu Qingyu with a smile and said, "Comrade Liu Qingyu, now that the suspect has been locked, what are your plans for the next step?" ”

Hearing Cui Zhenhua's question, Liu Qingyu smiled slightly: "Director Cui, is this question of yours considered an exam?" ”

Cui Zhenhua smiled: "Even if it is, I want to hear your deployment." ”

Liu Qingyu said with a smile: "Director Cui, my deployment is that Cheng Yonggang and his team will continue to follow up until the suspect is caught, and at the same time, the second team in charge of Comrade Zhou Shangwu will continue to investigate around Chen Tianjie's social relations, and as for the third team, after comprehensively extracting all kinds of evidence at the scene, they will instead focus on tracking down the criminal suspect Sun Jinxing, and cooperate with the first team to catch Sun Jinxing as soon as possible." ”

Cui Zhenhua said with a smile: "Since it has been determined that the suspect is Sun Jinxing, why do you want the second team to continue the investigation." ”

Liu Qingyu said: " Director Cui, you are testing me again, although we have locked Sun Jinxing as the suspect who killed Chen Tianjie, but the problem is that there seems to be no relationship between this Sun Jinxing and Chen Tianjie, one works in the martial arts school, the other works in the Transportation Bureau, and we have also done an investigation and confirmed that there is no intersection between Sun Jinxing and Chen Tianjie, then, Sun Jinxing's criminal motive for killing Chen Tianjie does not exist, since there is no relationship of interest and conflict, then there is only one possibility, that is, Sun Jinxing committed murder for money, since it was for money, this shows that Sun Jinxing has a hired murderer behind him, so, even if Sun Jinxing is caught, this case cannot be closed, but the case can only be closed if the instigator behind the scenes is found. ”

Hearing Liu Qingyu's analysis, Cui Zhenhua nodded with satisfaction: "Well, yes, yes, Liu Qingyu, you really surprised me, Lanshan City has you in charge, I estimate that there should be a great improvement in social security in the future." ”

When Liu Qingyu heard this, he immediately smiled and said modestly: "Director Cui, you also think too highly of me, and the social security of Lanshan City has a long way to go." ”

As Song Weiguo's team joined the team to track down Sun Jinxing, the operational efficiency of the entire Lanshan City Public Security Bureau was improved again, especially with the cooperation of the provincial department, everyone quickly determined through identity information that Sun Jinxing had fled to the provincial capital Tongda City and lurked, but although he hid in a small hotel, but in the face of the strong operational ability of the public security system, his lurking finally could not escape the law, and finally at about 1 o'clock in the morning the next day, he was directly captured by Cheng Yonggang and led people to take people back to Lanshan City.

At this moment, it is only 3 days before the incident.

When the news of Sun Jinxing's arrest reached Zhou Junhao's ears, Zhou Junhao was sitting in the office with He Yuxiang, drinking tea and talking about the relevant work of the municipal government.

Hearing the news, He Yuxiang's face looked a little ugly, and he said with some unhappiness: "Mayor Zhou, I really didn't expect that Liu Qingyu's luck was so good, and the suspect was caught just three days after the crime. ”

Zhou Junhao's face was calm, and a cold smile appeared on the corner of his mouth: "It can't be achieved, who said it, why don't I know." ”

He Yuxiang was stunned for a moment, and looked at Zhou Junhao with some puzzlement,

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