Detective from the future

Chapter 37 Suspects

Not long after, Zhao Ming and the technical team arrived at the scene.

"Team Zeng is sorry for being late." Zhao Ming scratched his head.

"Why did you go, kid? It took so long to come here."

"I went to play live CS with my friends. The venue is a bit far from the city."

"Okay, life is quite colorful." Zeng Ping smiled.

"I just want to practice the gunfight experience, which will be useful for arresting criminals in the future." Zhao Ming said.

Zeng Ping didn't hold on to it, he found Lu Wen of the technical team and asked him to go to the toilet to collect the fingerprints of the camera.

"Do you have any boyfriend's belongings at home?"

"There's his water glass under the table." After speaking, Chen Luyan was about to reach for it.

"Don't move, let me come." Wearing gloves, Han Bin took out the water glass from under the table.

"There are fingerprints." Han Bin handed the water cup to the rest of the technical team to collect fingerprints.

"Team Zeng, are there fingerprints on the envelope and USB flash drive?"

"No visible fingerprints."

After a while, Lu Wen and another colleague of the technical team collected their fingerprints and used a portable police fingerprint comparison machine to compare their fingerprints on the spot.

In this way, the investigation direction can be determined as soon as possible and the time to solve the case can be shortened.

"Team Zeng, the fingerprint on the camera and the fingerprint on the cup are not the same person."

Zeng Ping responded and handed the envelope and USB flash drive to Lu Wen. There were some inconspicuous fingerprints that could not be seen with the naked eye, but it did not mean they were absent. They could be detected by chemical agents and instruments.

Of course, if you wear gloves, or if you have been wiped, then there will be no fingerprints.

"Comrade police officer, can my boyfriend be ruled out?" Chen Luyan breathed a sigh of relief.

If it was his boyfriend who did this, she would feel even more frightening.

Zeng Ping did not answer. Although the fingerprints did not match, he could not rule out the suspicion of an accomplice committing the crime. His boyfriend had the key to the house and was still suspected.

"Team Zeng."

At this moment, Li Hui, who was checking the monitoring, came back.

"Have you found anything?"

"I went to the monitoring room and asked. There are surveillance cameras at the front door, the lobby on the first floor and the elevator, but the stairs, back doors and corridors of the apartment building are not monitored." Li Hui said.

"That is to say, as long as the suspect knows the situation of the apartment, or steps on the spot in advance, he can completely avoid the monitoring." Tian Li analyzed.

"Apartment buildings are different from residential buildings. Generally, there are only one or two buildings, and the security is a bit worse." Han Bin said.

"From the existing monitoring, have you found any competent personnel?" Zeng Ping said.

"No."

"I think Ms. Chen should check the surveillance to see if there is anyone she is familiar with." Han Bin suggested.

Zeng Ping nodded: "In this case, acquaintances are more likely to commit the crime."

"I copied all the videos." Li Hui took out a USB flash drive.

Afterwards, Chen Luyan used the computer to watch the surveillance.

Han Bin and others were in a slightly distant position, discussing the case in a low voice.

"Team Zeng, there are too many loopholes in monitoring. A suspect with a little brain will climb the stairs, so it is unlikely to check the monitoring." Li Hui discussed.

"I think, but her boyfriend is still suspicious. There is no sign of the door lock being picked, and there is no key to enter the door, so the camera cannot be installed at all." Tian Lidao.

"Aren't the fingerprints incomparable?" Zhao Ming said.

"Before the camera was installed, others may have touched it, or even the fingerprints of the person who sold the camera." Tian Li explained.

"If this is the case, the case will be complicated." Li Hui said.

"Han Bin, tell me what you think."

"I saw that camera just now, and I think the camera can be used as a troubleshooting direction."

"What kind of investigation method?"

"Since the camera is on, it must be watched. The video on the camera can either be copied or uploaded through the Internet, so that it can reach the suspect." Han Bin said.

"This is a good entry point." Zeng Ping nodded and analyzed:

"If it is a copy, the U disk needs to be replaced frequently, and the suspect may have come to the victim's house more than once; if it is uploaded over the Internet, the camera must be connected to the wireless network."

"I just saw that the camera should be a video uploaded through the Internet. The suspect can monitor it with his mobile phone or computer." Han Bin said.

"The camera is so hidden, surrounded by walls, and the network signal that is too far can't be reached, which means that the suspect is using the surrounding network." Li Hui said.

Han Bin took out his mobile phone. He just took a few pictures of the camera and observed it carefully: "342"

"What do you mean?"

"The web account used by the camera."

"Did you mean 342?" Chen Luyan interjected on the side.

"You know, whose wireless network is this nearby?"

Chen Luyan opened her mouth wide: "This is my family's, and the network I link to is 342."

"Who knows your network password?" Li Hui asked.

"Just me and my boyfriend."

"The internet is also your boyfriend, did you help install it?"

"That's not it, the landlord had already installed it when I came." Chen Luyan said this, as if remembering something: "By the way, the password is also set by the landlord, and he knows it."

"In this way, in addition to Miss Chen's boyfriend, the landlord is also suspicious." Zeng Ping said.

"But the landlord doesn't have the key either." Tian Li said.

"This is a bit preconceived. The landlord doesn't have the key now, but he used to have it. Before Ms. Chen moved in, she may have installed a camera." Han Bin said.

"Yes." Tian Li suddenly realized: "Then the fingerprints collected on the camera should be compared with the fingerprints of the landlord."

Zeng Ping walked over and checked it: "Miss Chen, have you wiped the router?"

"The router is placed on the desk, and when the window is opened, it gets dusty. I often wipe this."

"The routers are usually installed by people from the network company, and the fingerprints collected may not necessarily belong to me." Han Bin said.

"Think about it, is there anything belonging to the landlord at home, or has his fingerprints left?" Tian Li said.

Chen Luyan frowned and thought for a moment, then shook her head: "The house has been rented for two months. After renting it, I have already cleaned it, and I can't remember it for a while."

"Did you press your fingerprints when you signed the house lease contract?" Han Bin asked.

"I remembered. When I signed the contract, I didn't want to do it. The landlord suggested that both parties have fingerprints. He said it was more secure and reassuring."

"Take the contract."

After a while, Chen Luyan brought the lease contract, and the fingerprints were stained with ink pads, so they didn't need to be collected, just compared them directly.

After some comparison, Lu Wen confirmed: "The fingerprint on the lease contract is exactly the same as the half fingerprint collected on the camera. This person is very suspicious."

Because only half of the fingerprints were collected on the camera, Lu Wen could not be [-]% sure that it was the same person's fingerprints.

However, this is enough for Zeng Ping and Han Bin.

In a case, the possibility of two people having the same half-fingerprint is almost negligible.

(End of this chapter)