After Lu Chuan thought for a moment, he explained to Chen Jiang.
"This clue still needs to be investigated as soon as possible. Although it is more cumbersome to investigate this clue, we also have a strategy."
Lu Chuan thought for a while and started from the area near the crime scene. investigation.
Based on the current situation, it is quite possible that the criminal suspect lives and works near the victim’s family.
"Chen Jiang, so you should use the neighborhood where the victim lives as a base to find out if anyone has purchased this black color recently, and ask if there is anyone who thinks he can do something about it."
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Lu Chuan then added: "Especially those who bought gloves the day after the incident."
Lu Chuan added this sentence, and Chen Jiang understood what was going on.
This kind of gloves is cheaper and sold in larger quantities. If the criminal suspect had worn these gloves on the day of the crime, he would have been stained with blood during the handling of the body.
So the other party probably threw the gloves at the scene and burned them directly.
This kind of gloves is cheap. If the suspect gets used to wearing them, he will probably buy a new pair the next day.
"Okay, I understand what you mean, I'll do it now."
As a squadron leader, although Chen Jiang has not been working for a particularly long time, he is a veteran as a criminal police officer.
These seemingly simple interviews and investigations are actually likely to bring great progress to the investigation of the case.
After a person kills someone, as long as the other person's psychological quality is not particularly strong, then this person will definitely have some reactions that are beneficial to ordinary people in a short period of time.
From a psychological point of view, everyone has a need to talk.
No matter what the reason was, this criminal suspect killed Zhang Haibin's family. From a psychological point of view, whether it was revenge or other goals, he had a mentality of confiding.
But if you can't talk about this kind of thing, what should you do? It will be reflected in some abnormal behaviors.
For example, a person who has never drank drinks drinks, or a person who is taciturn suddenly talks a lot.
Either you suddenly increase your consumption, or you suddenly buy some things that you have never been able to buy before or have never bought before.
In short, these external manifestations will be reflected in some details of life or language or behavior that are different from the previous life.
Why do some criminal police officers just look at the clues of the same case and pass them by, but in some situations, with rich experience, they can find patterns or suspicious points from these small changes.
This is the reason at all.
At the same time, Chen Baoguo’s investigation has also made new progress.
Chen Baoguo no longer conceals his relationship with Chen Xue and has made it very clear.
It has actually been four or five years since the two people hooked up.
"Chen Baoguo gave some information, but he said he was not responsible for the murder."
Wang Zhaokai drank a glass of water and sat across from Lu Chuan.
"No one else knows about the relationship between Chen Baoguo and Chen Xue. The two met at a dinner party."
What Wang Zhaokai said is what we learned here.
According to Chen Baoguo's confession, there is pure love between him and Chen Xue.
At that time, Chen Baoguo had not yet been promoted, but he had already served Zhang Haibin's family.
“Chen Baoguo does everything at home, including eating, drinking, and refueling the car.”
“After going back and forth, the two of them became familiar with each other, and Zhang Haibin socialized a lot. They were not familiar with family care, so Chen Baoguo and Chen Xue got together."
Wang Zhaokai took out his mobile phone and saw a photo.
"I found something interesting." Wang Zhaokai showed the photos on his phone to Lu Chuan.
"This is something we found in Chen Baoguo's office this morning."
"What is it?"
There is some dark powder in the photo.
“Lead powder!”
Lead powder?
“This thing is called lead powder, but it is not actually metallic lead, but a powder ground from a plant in Chen Baoguo’s hometown.”
“We learned about it and found out that it is actually lead powder. A kind of Chinese medicinal material, but this kind of thing is poisonous. If consumed for a long time, it will cause great damage to the liver."
Wang Zhaokai continued: "This guy Chen Baoguo is too timid, thinking that we are going to take him and Zhang Haibin. When someone's death was involved, I was so frightened that I told him about it directly. "
In fact, Chen Baoguo had already taken action against Zhang Haibin, but his method was relatively secretive.
He and Chen Xue had already discussed it long ago to chronically poison Zhang Haibin through this chronic poisoning method.
Chen Baoguo provided Chen Xue with the powder of this Chinese medicinal material.
When Chen Xue was cooking at home, she gave these things to Zhang Haibin and poisoned them in the dishes that Zhang Haibin was willing to eat.
“The two of them have been doing this for more than half a year.”
Before reporting to Lu Chuan, Wang Zhaokai had already confirmed with the forensic doctor that Zhang Haibin’s liver was indeed Not so good.
However, the medical examiner did not conduct an independent test and believed that he had liver damage caused by a long-term irregular lifestyle or excessive drinking.
"Looking at it now, even if Zhang Haibin's family didn't kill him, he probably wouldn't have survived for a few years."
Lu Chuan did not expect that Wang Zhaokai's investigation would have unexpected surprises in this regard. Harvest.
But as Chen Baoguo explained, he had no motive for committing the crime because he wanted to kill Zhang Haibin and had already taken action, but there was no need for him to kill Chen Xue.
It is even more impossible to kill two children of the family, so from this aspect, Chen Baoguo has no motive for committing the crime.
In the morning of this day, Lu Chuan went to the branch after clearing Wang Zhaokai and Chen Jiang's reports.
Chen Weiguo has been calling one after another to inquire about the progress of the case, and has not stopped in the past two days.
Lu Chuan was also very anxious here, but he still had to go over and give Chen Weiguo a peace of mind pill.
Although the case has not yet made decisive progress, all aspects are making progress, which means there is hope for solving the case.
After Lu Chuan returned from Chen Weiguo in the afternoon, Sun Biao was already waiting in the office.
"Team Lu! You're back!"
Lu Chuan saw Sun Biao getting emotional: "What's wrong?"
"Did you find anything?"
Sun Biao said Bian went to investigate the matter of Zhang Tao leaving No. 3 Middle School and transferring to No. 9 Middle School.
Originally, there was just a doubt in it. Based on the police's instinct, I wanted to figure it out. In fact, Lu Chuan didn't pay much attention to this clue.
But now that Sun Biao's expression is so excited, could it be that he has made some big discovery?
Sun Biao nodded heavily.
"Liant Lu, this time we really found out that there is a secret behind Zhang Tao's transfer. It's not that simple."
Sun Biao didn't take this clue too seriously at the time. I just wanted to figure it out, but after arriving at No. 3 Middle School, I discovered that some things were not as simple as they seemed. (End of this chapter)