Chapter 514 Changing the direction of case handling


Chapter 514 Changing the direction of handling the case

Two clues?

Just now Qin Yong was worried that he had no clues, but Lu Chuan suddenly gave out two important clues.

"Xiao Lu, tell me, what clues are there?"

Of course it was impossible for Lu Chuan to show off at this time, so he turned on his laptop, connected it to the projector, and started playing.

"First, tetrodotoxin was not found in the steamed buns, nor was it found in the vegetables used to make the vegetable soup, but we detected tetrodotoxin in the vegetable soup."

This point...

Lu Chuan spoke quickly and briefly, and did not say much, but the information revealed here made everyone think deeply.

Nothing was found on the steamed buns, nor on the vegetables. What does it mean?

If tetrodotoxin enters the construction site canteen from the outside, then there are basically only two possibilities, either on the steamed buns or on the vegetables.

This is why Qin Yong asked the action team to investigate the Aihui Farmers Market.

But the test results Lu Chuan now received were that no tetrodotoxin was found on the steamed buns, and no tetrodotoxin was found on the vegetables used to make the vegetable soup.

This means that tetrodotoxin does not enter the construction site canteen through these two channels.

If tetrodotoxin is not external, it should come from within.

Toxins were detected in vegetable soup, which proves this point.

But Wu Guichun made the vegetable soup himself, would he poison himself?

The motivation is wrong!

Wu Guichun had no reason to poison. As the owner of the canteen, he was first of all the beneficiary of the canteen's interests. Only when the canteen was good could he make money.

If he has a conflict with some workers and wants to kill them, he has tetrodotoxin in his hand, and one-on-one poisoning can achieve the goal. There is no need to put the toxin in vegetable soup. Cause widespread food poisoning.

Furthermore, tetrodotoxin is colorless and odorless and will not be noticed at all after being sprinkled.

So, who is it?

Everyone looked at Lu Chuan, waiting for his next report.

"Second, look at this picture."

What is played on the projector is an enlarged picture of a milky white block.

“This is what we found at the bottom of the vegetable soup pot in the canteen where the crime occurred.”

"We have just contacted Wu Guichun. The vegetable soup he made is vegan and does not contain meat."

"But we detected the presence of meat in the bottom of the vegetable soup pot."< br>
“Just after testing, it can be determined that this is the outer skin and part of the internal organs of a puffer fish.”

The outer skin and internal organs?

Most of the toxins carried by pufferfish are concentrated in the liver, with a small part in the skin.

But there are no toxins in puffer fish meat.

“From the remnants of the puffer fish skin and part of the internal organs, it can be inferred that the way the other party poisoned them was not to directly extract the toxin, but by putting the puffer fish skin and part of the internal organs into the vegetable soup pot. As a result, this pot of vegetable soup contains toxins."

Qin Yong could naturally understand what Lu Chuan meant: "You mean that someone deliberately threw the puffer fish's skin and internal organs into the vegetable pot to poison it? "

Lu Chuan nodded affirmatively: "From the perspective of the motive of committing the crime, the possibility of Wu Guichun himself poisoning others is very small."

"But if it was a worker who had breakfast who poisoned him, it might be possible. The sex is bigger.”

Why?

Everyone has a question in their mind.

Why do workers poison themselves?

But there seems to be no other reason to explain it.

Lu Chuan continued to report: "Well, according to the current survey results, those who eat in the canteen in the morning are all workers on the construction site." "I wonder if we can start from this aspect. First of all, puffer fish This kind of thing is not easy to get.”

“We can check the source of pufferfish.”

“I agree with Lu Chuan. Wild pufferfish is very difficult to get. If the other party can get this kind of thing, the source can be carefully investigated. Check it out."

Zhang Hui straightened his back, frowned and looked at the photos in the projection seriously.

“And there is another point that we overlooked during the morning investigation.”

"During the investigation in the morning, we focused on the social relationships of Wu Guichun, the owner of the canteen, and the social relationships of the suppliers of steamed buns and vegetables to the canteen." The possibility of conflicts between suppliers and workers is actually not high.”

“So if it is a dining worker who is poisoned, can we investigate from the following two aspects?”

"First, check to see if any workers have had conflicts recently."

"The other party used tetrodotoxin for poisoning with a simple purpose, just to kill people."

"So among the workers who had dinner today, checking which ones had particularly violent conflicts can be used as a breakthrough."

"The second is, have there been any conflicts between workers and the construction site?"

“In such a large-scale poisoning case, the possibility of the other party targeting one or two people is actually not high. If the poisoner has a conflict with someone, then just poison the other party directly, but Is it possible that he poisoned people on such a large scale because of conflicts with the construction site?”

“Well, I think this analysis is OK.”

“Yes, if it was a worker. Poison, then our previous investigation direction is indeed a bit biased.”

This is how it is to solve a case. The direction is very important. If the direction is wrong, the case will become more difficult to solve.

Because the poisoning case occurred in the canteen, everyone will naturally focus on the canteen itself in the early investigation.

The reason why the criminal investigation detachment focuses on the canteen itself is ultimately due to the interests of the canteen.

Now Lu Chuan's test results can basically confirm that the poisoner is a worker, so the conflict of interest between workers and workers, workers and the construction site is also a point of conflict.

Qin Yong knocked on the table and looked around: "Do you have any other suggestions?"

Everyone shook their heads. Lu Chuan's appraisal analysis determined that the criminal subject might be a worker.

Then what Zhang Hui said next is correct.

Investigate around the interest relationships between workers and workers, and between construction sites.

"Okay, since everyone has no objections, let's divide the troops into two groups."

"The first group, Sun Jun, will take the lead, and the operations group will be responsible for the investigation. Recently, there are No unstable conflict situations”

"Another group, Zhang Hui, will lead the team to investigate the source of pufferfish."

If it is just pure tetrodotoxin, it is not particularly easy to investigate.

Because after being refined, tetrodotoxin can come from anywhere.

But pufferfish is different.

Compared with buying and selling tetrodotoxin, the origin of a pufferfish is easier to trace, especially wild pufferfish.

Wild puffer fish do not grow in the waters around Haizhou City, and there are only a few restaurants in Haizhou City that do puffer fish business.

It’s easy to check.

(End of this chapter)

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