Chapter 470 The profession of trace inspection

Author: Great Master of the East

Chapter 470 The profession of trace inspection

At seven o'clock in the evening, Xu Zheng's team was working overtime in Cuizhuyuan Community. He led the trace inspection team and knocked on the door of the first floor of Unit 3 of Building 2 again.

The last time I left a phone number, Xu Zheng had already contacted the host before he came.

In fact, if the boss hadn't urged him so urgently, there would have been no need to bother him at night, but this fingerprint could be the direct evidence that Ping Mengmeng's disappearance was definitely related to Du Longtao.

Think about a missing girl's bloody fingerprints left on the wall of your house. You don't suspect who does.

With this evidence, Du Longtao can be arrested directly.

It can be seen that the leaders attach great importance to fingerprints. However, after ten years, everyone is eager to know whether fingerprints can survive under wallpaper without damage.

If this fingerprint exists, it is direct evidence. If it is damaged, you can only use the photo on the hostess’s Douyin short video. This is indirect evidence. Of course, it is best to have direct evidence for such an important case.

In addition, the leaders also hoped that there would be more direct evidence in this room, so when it was almost time to get off work, Director Nie directly issued a message that he would have to work overtime to get it done.

Xu Zheng was well prepared for this visit. Because the fingerprint comparison was successful, the procuratorate approved the online search warrant, which gave the operation an official seal.

And he also came with sincerity.

Seeing the police comrades coming to the door again, the host and hostess opened the door hesitantly and entangled. After both parties sat down, Xu took out their IDs and search warrants and informed the host of the reason for the visit, "Currently, we have investigated that the people in your home are

The first floor and the master bedroom may contain exhibits and evidence that our police need, so we need to uncover the wallpaper in these two rooms.

Also, please rest assured that our police will compensate you for all losses and compensation, and you will not suffer any losses.

And because we had to work at night, we also asked the lady to take her children to a nearby hotel to rest for a night, and the police paid all the expenses.

Also, will our police replace the wallpaper, or will we pay you directly?"

Compensation is necessary, but the male host wanted to be polite and said no, it wasn't much money, but this is a procedure and he must go.

In the end, the couple discussed it and asked the police to pay compensation, and they would handle the rest themselves. As for the damage quotation, Xu Zheng said that the wallpaper and labor costs for the two rooms would be reported to him truthfully at that time.

Xu Zheng promised, "Don't worry about one thing. After you submit your account, we should transfer the money to you in three working days."

The male host smiled and nodded. As the owner of the house, when his wife kept tugging on his clothes, he staggered his body to block Zhuang Qiang and Ji Meiyue's view, and gave Xu Zheng a red envelope, "Xu Zheng

Officer, may I ask if our house is the scene of a murder?"

Xu Zheng discussed this issue with Zhuang Qiang and Ji Meiyue on the way here. Although there is currently no evidence to say that this is the scene of the first crime, the wall where Ping Mengmeng's fingerprints are now has been spattered a lot.

blood.

After returning the red envelope, Xu Zheng decided to tell the truth, because these things could not be hidden. When the case was solved, the police would definitely publicize it to the outside world. What was the point of hiding it from them now?

"Mr. Xie, the case is currently under investigation. It is not convenient for me to tell you too much. We have not found evidence of a homicide or other criminal cases in this house. As for the others, we will not know until the evidence is conclusive.

"

Mr. Xie tightly grasped the red envelope in his hand and understood what Xu Zheng meant. Being able to find evidence here now means that the police have become suspicious. His face suddenly became ugly. Mrs.

Where their son lives makes them even more worried.

Xu Zheng saw that they were sad but did not say anything to comfort them.

It depends on what you say about this. As cities expand, many communities are built on former cemeteries, and some messy things may happen when building houses.

Now Xu Zheng is also studying forensic medicine. He himself doesn't care much about these things, but it is obvious that the Xie family will have insomnia tonight.

Since they agreed to the police's arrangement, Ji Meiyue sent Mrs. Xie and their children to a nearby hotel. As for Mr. Xie, he could only stay at home as a live monitor.

Next, the trace inspection people came in with tools. Du Longtao spent money to decorate this house before, and the walls were painted with latex paint. Later, Mr. Xie used high-end woven wallpaper when decorating.

The glue is all imported plant adhesive and is basically non-corrosive to the wall.

"Officer Xu, I remember that when we were renovating three or four years ago, those masters did not clean the walls, but directly worked on them. I think what you are looking for under the wallpaper will most likely be fine." Mr. Xie looked at it.

When the police came for trace inspection, they took out the steam engine and knew they were going to remove the wallpaper.

Xu Zheng nodded, "To be honest, we definitely want the things under the wallpaper to be undamaged. Let's wait and see."

The steam engine mainly heats and wets the wallpaper, so that the wall will not be damaged when the wallpaper is removed later.

Xu Zheng and Zhuang Qiang watched the trace inspection people busy here. It must be said that these people's methods were very professional. In addition to the steam engine, they also took out alcohol spray bottles, hair dryers, salt, and various shovels and tweezers.

The steps are set one after another.

Xu Zheng didn't really understand this professional technique of removing wallpaper, so he looked at it very seriously at this time.

Even Mr. Xie was a little excited at this time, "Officer Xu, your colleagues are very professional. Can we buy wallpaper and you can help put it up?"

After saying that, he felt that it was impossible for these police officers from the technical department to help him, so he smiled and shook his head and walked out.

The homeowner's departure did not affect the trace inspection personnel's continued work. After the steam engine had been working for five minutes, Captain Yang, the leader of the trace inspection, asked Xu Zheng, "Squadron Xu, shall we start?"

Xu Zheng looked at the working camera, "Come on, Captain Yang, you can follow your own pace. You just saw the photo of the approximate location of the fingerprints. As long as the fingerprints are not damaged, you will have done a great job."

Captain Yang laughed twice, "Don't worry, the two previous owners of this house were very good at decorating with materials. Besides, our skills in removing wallpaper are no worse than those who do decoration."

Xu Zheng didn't know much about decoration, but Zhuang Qiang had some experience with it. He watched Captain Yang and the others peel off the wallpaper bit by bit with a small shovel, and sprayed some alcohol on areas that were tightly adhered to the wall...

Zhuang Qiang nodded to Xu Zheng, meaning there was no need to worry.

It was a lie to say that he was not worried. Soon after entering the door, the wallpaper on the gable wall was almost exposed to fingerprint marks, and everyone was highly concentrated.

As Captain Yang slowly uncovered the piece of wallpaper, what appeared in front of everyone was a snow-white wall with the unique graininess of latex paint.

However, everyone was mentally prepared for this situation. Captain Yang took out the blood trace revealing agent from his bag and lightly sprayed it on the wall. After a while, a mark as big as a grain of rice appeared on the wall.

It wasn't until he saw this scene that Xu Zheng's heart dropped. It was impossible to do a DNA test with such a faint trace, but as long as there were fingerprints, it would still have the same effect.

Captain Yang took out the blue contrast agent and sprayed it on. Only a quarter of the fingerprints were exposed in front of Xu Zheng and the others under the influence of the contrast agent.

This time, it was 100% confirmed. This fingerprint was Ping Mengmeng's. Xu Zheng had high-definition photos processed by the technical department on his phone. After manual comparison on the spot, it was 100% the same.

"Captain Yang, and brothers, thank you so much for today." Xu Zheng was very happy to get this fingerprint at the scene, because there was finally direct evidence in the case of Wumei's disappearance.

Fortunately, after more than twenty days of painstaking investigation, this case finally has substantial evidence, which is not easy.

Captain Yang was also very happy, "Lieutenant Xu, what you said is wrong. Although we are in different departments, we are all one family. Is that right?"

Then they started to make fun of each other. The group of people had fun for a long time. Xu Zheng was afraid of disturbing the neighbors and said, "Captain Yang, you still have to continue working. Check all the four walls of this room, including the roof, to see if there are any other fingerprints or fingerprints."

Dried blood.”

After he finished speaking, he arranged for Zhuang Qiang to stay here and wait for Captain Yang and others to complete their mission before returning home.

As for himself, he called Ji Meiyue, who had just returned from the hotel, and rushed towards the city bureau.

Of course, the first thing to do when receiving good news is to ask for credit from the leadership, but the only superior Xu Zheng can report to is Zhang Yuqi.

At this time, no matter how close he was to the Wan detachment, he could not get past his captain.

After hanging up Zhang Yuqi's phone, Xu Zheng finally breathed a sigh of relief, "I have been busy for so long, but I didn't expect the clues to come to me so inadvertently. It always feels too easy to be true."

Ji Meiyue felt that the progress of the case was too slow, "Based on the cases you have handled in the past, this is the one that takes the longest to investigate clues.

No matter what, everyone can finally breathe a sigh of relief when this fingerprint is found, which proves that our efforts during this period are in the right direction.

By the way, today I heard that the people from the Guohe Fugitive Investigation Office are planning to return to Beijing in the next two days, but they didn’t invite you to take up a temporary position at the Guohe Fugitive Investigation Office?”

With Xu Zheng's current qualifications, he is simply not qualified to join the National Cooperation and Fugitive Investigation Office. Even if their leaders value him, there are two million domestic police officers. Who wouldn't want to be transferred to the Ministry of Public Security, even for further training or "hanging up".

Xu Zheng didn't feel any pity, "I can only work hard in Changming. This is also relying on the care of my elders. There are too many capable people in this world, and there are many people who have done more than me. I don't even think about being promoted."

Pass.

Also, I just got married and Sister Xiaorui just got pregnant, so I don’t want to leave Changming."

Ji Meiyue felt that Xu Zheng would also be unwilling to leave Changming, so she told some relaxing news, "There is another thing you may not expect. I heard that the Provincial Fugitive Investigation Office was named and criticized by Section Chief Ou this time.

They said that in the past year, they arrested more wanted criminals A and B than you alone."

Speaking of this, Xu Zheng also felt that he was wronged, "Generally, wanted criminals would commit crimes in groups or participate in social organizations. It was just a coincidence that I caught those.

It's a pity that I seem to have caught the wanted criminals A and B in Changming, and we have only caught one Jin Weiwei in the past six months."

Ji Meiyue smiled, "I think you can go to the provincial fugitive investigation office and arrest the most wanted criminals in our province if you have the ability."

"Sister Meiyue, please don't put your hat on me. Catching wanted criminals mainly depends on luck." Xu Zheng said this, but in his heart he still relied on the system. Unfortunately, his system no longer directly locates wanted criminals for him.

Moreover, the cases he is handling now take a very long time, and the system has not been ringing for a long time.

Now Xu Zheng is waiting for the final approval of the serial murder case of Jing Wei and Gao Liying in Suyun City. It is currently heard that it is impossible for Teacher Jing Wei to plead guilty in full, and the progress of the case has slowed down.

By the way, there is also the case of the death of a famous celebrity assistant. The current interrogation progress of Jin Weiwei is not satisfactory, so the case is not closed, and the system will not reward them until they are completed.

Finally, there is Professor Chi Guoming, who ranks ninth on the system hidden kill list. Xu Zheng has already guessed what he is promoting, and there is no rush for this matter.

When these cases are over, he can get three rewards, and Xu Zheng feels happy just thinking about it.

Back at the city bureau, Zhang Yuqi was still in the office. She breathed a sigh of relief when she personally obtained all the video recordings of the fingerprints found during the fingerprint inspection. This fingerprint was found during the video recording, which meant that everything was foolproof.

Looking at the time, it was already 9:30 pm. Zhang Yuqi first called Wan Haihong to report the good news, and then said to Xu Zheng and Ji Meiyue: "It's so late, you two get off work first, and I'll go to the scene to take a look.

"

The leader didn't even get off work and had to work overtime at the crime scene. Xu Zheng didn't want to go home directly, so he had no choice but to follow Zhang Yuqi to Cuizhuyuan Community.

In the room on the first floor, all the wallpaper has been taken off. The trace inspection basically covered the four walls with blue contrast agent. Unfortunately, except for a few traces of blood, no other useful clues were found.

.

However, Captain Yang found a bent hair in the gap of the closet track in the master bedroom on the first floor. After Zhang Yuqi and Xu Zheng arrived, he closed the door and said, "You guys, this hair was found in the gap of the closet track door.

It looks like it should be the hair of an adult woman, but according to my observation, Mrs. Xie is most likely a hairless person." He paused, "Do you want to ask me how I discovered it?"

He pointed to the wardrobe and the bottom of the bed, "This wardrobe, Mrs. Xie and the others did not renovate the wardrobe when they renovated it, they just changed the bed and wallpaper.

You see, the bottom of the bed is not spotless, but the most conspicuous thing inside is that there is no hair on the hostess’s face, only her hair and the hair on the male host’s head…”

At this point, he looked at Zhang Yuqi again and whispered: "According to my experience, I observed Mrs. Xie. This woman is naturally charming. Her speech is soft and has a slight accent. The most important thing is her lips.

The plump lips correspond to the fact that there is no dark jungle there, so I think there is a high probability that this hair belongs to another woman, and it is still in the crack of the wardrobe track, so I think it may belong to the missing person."
Chapter completed!