Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 501 Authentication
In the early stage, through investigating Wang Feng's call records that night, the deliveryman who delivered food to him at that time had been identified.

Zhang Hui discovered the surveillance video of the delivery man entering the community through the surveillance camera at the front door of the community.

The time was 28:32, and the delivery boy left from the front door at [-]:[-].

The information shown in the surveillance video is consistent with the information provided by the delivery boy.

At around 11 o'clock in the evening, there were not many people entering and leaving the community, which brought a lot of convenience to Zhang Hui's investigation.

"Look at the surveillance at the back door."

After the delivery boy left, Zhang Hui continued to check the video for about an hour after the front door, but did not find Wang Feng.

Video of asking the security guard to open the back door: "Turn on the surveillance after 32:[-]."

"Okay, wait a moment, the equipment we have here is more than ten years old, so it's a bit slow to read it."

The security guard was very cooperative, but the computer was not powerful.

After tinkering for about ten minutes, a blurry picture appeared on the computer screen.

Compared with the high-definition video of the front door, the video of the back door is much blurry, and it may be due to dust covering the camera that the picture is very unclear.

"Want to fast forward?"

"No, just play it at the original speed."

If Wang Feng really left through the back door, it might only take a few seconds from entering the camera range to leaving the camera range. If he fast-forwards, he may not be found.

Hey.

Zhang Hui looked at the caller ID and saw it was Lu Chuan.

"Lu Chuan, are you done with your work over there? Did you find anything?"

"Brother Hui, I've finished my work here and found the things. Where are you? I'll go find you."

Zhang Hui felt excited when he heard Lu Chuan say that the thing had been found.

He knew that what Lu Chuan was talking about was the mobile phone Qin Yong was talking about.

Finding the mobile phone means that Wang Feng is most likely fine.

It's okay...it's best!
"I'm in the security room investigating the surveillance that night. You guys, come over too."

After hanging up the phone, Lu Chuan and Yang Lin locked the door and went straight to the security room.

"stop!"

As soon as Lu Chuan entered the door, he heard Zhang Hui shouting to stop.

The security guard freezes the scene, and two slightly blurry figures appear on the computer screen.

The two were walking side by side, both holding cigarettes in their mouths. One of them happened to be facing the surveillance camera, and was captured in a frontal photo by the surveillance camera.

Yang Lin's eyes widened: "It's Wang Feng!"

Although the picture was blurry, there was no way Yang Lin could recognize Wang Feng.

"sure?"

Zhang Hui had seen Wang Feng's photo, but from the blurry surveillance video, it wasn't very clear.

The reason why Zhang Hui just asked the security to suspend monitoring was not because he was sure that the person under surveillance was Wang Feng.

It's because every time he sees someone going out, he has to pause, especially a man.

After 11:[-] p.m., most people have gone to bed. There are some people entering the community, but very few people leaving the community.

Lu Chuan and Yang Lin arrived just in time. When they came in, they saw the video of Wang Feng leaving the community.

Lu Chuan took a step forward and nodded seriously: "I'm sure, it's Wang Feng." Looking at the time again, it was [-]:[-] pm.

This was the last time Wang Feng appeared in the surveillance.

After Zhang Hui asked the security guard to copy the video, the three of them left the community.

In the car.

"Brother Hui, what should I do next?"

The car didn't drive away, the three of them were discussing what to do next.

"First, there are surveillance cameras outside the community. I will go over later to see where the surveillance cameras are and who is in charge of them. Then I will check and see if I can find out how Zhang Wangfeng left the community that night. If It would be great if you can find the car the other person is riding in."

The time Wang Feng left the community was 12:08 that night. The bus must have disappeared. The other party most likely left by car. As long as there was a car, it was very likely that he would be found by following the traces of the vehicle.

"The other one, when we were watching the surveillance just now, did you notice that Wang Feng and the other person who didn't turn around were both smoking."

Lu Chuan and Yang Lin nodded, and they also noticed this.

Now that I think about it, Wang Feng turned to look at the camera, which may have been a deliberate clue. However, the other person who was with Wang Feng did not turn his head, and there was only the other person's back in the surveillance camera.

"We'll go to the back door to take a look later. The cigarette butts they smoked three days ago should have been thrown near there, and see if we can find them."

Yang Lin's eyes lit up. Zhang Hui said that he was looking for cigarette butts because he wanted to use the saliva information on them to determine the identity of the person who was with Wang Feng.

"And we can't go there blatantly. We'll wear sanitation worker clothes later, put on sanitation worker clothes and go look there."

Zhang Hui's idea was very thoughtful, and the three of them acted separately!
Zhang Hui went to check the surveillance, while Lu Chuan took the physical evidence just found at Wang Feng's home back to the criminal investigation detachment for analysis and identification.

Yang Lin went back to the police station to find someone, got a sanitation worker's clothes, and went to the back door of the community to pick up cigarette butts.

Yang Lin came from a major and studied field exploration for four years at university. Collecting physical evidence was very simple for him.

In the past two years of working at the police station, I have dealt with many people from all walks of life. I put on the clothes of a sanitation worker and changed my shoes to ensure there were no flaws.

The reason why I didn't go directly to find the cigarette butts was because I was afraid of exposing my identity.

A disappearance case police station sends police officers to the scene to inspect and check surveillance videos. This is normal operation, but if they even pick up cigarette butts, this may arouse the suspicion of interested people.

Zhang Hui and Lu Chuan wanted to find Wang Feng through normal investigation of the disappearance case.

However, Wang Feng cannot be put in danger because of excessive methods or methods that are obviously not from the police station.

Current survey laboratory.

Fingerprints on the water glass and the fingerprints on the ice cream wrapper were extracted smoothly.

Although there was some deformation, Lu Chuan had no problem doing the identification and analysis.

The lip prints on the water glass have long evaporated due to the time being too long, and no effective DNA genetic material has been collected from the substances on them.

Yang Lin picked up more than thirty cigarette butts outside the gate and handed them over to Yang Sen for processing.

"Look at the fingerprints. If the identity of the other party can be locked through fingerprints, DNA identification will not be necessary."

Cigarette butts are an alternative. If fingerprint identification analysis fails, the saliva remaining in the cigarette butts can in most cases verify DNA information.

Walking on two legs is better than walking on one.

Facts have proved that Lu Chuan overestimated the other party.

The other party was not as cautious as expected, and the fingerprints left behind were quickly matched with the identity information of the target person in the fingerprint database.

Wu Lei, male, 26 years old, from Haizhou City.

The night when Wang Feng disappeared was the last time he saw Wang Feng. The two left at 12:[-] in the middle of the night from the back door of the community where Wang Feng lived, and Wang Feng disappeared after that.

(End of this chapter)