Solving the case: Combining the police dog's olfactory genes at the beginning

"It doesn't matter."

Zhou Fan smiled and then continued walking forward.

When Luo Fei heard what the other party said, he felt doubtful in his heart.

It is clearly recorded in evidence science and some criminal investigation scene records that all the unconventional phenomena after the incident may have some connection with the case.

This cannot be ignored!

Especially in an environment like a chemical plant, it is indeed inappropriate to block the ends every three days. The lower pipeline is responsible for sewage discharge and filtration, and must be paid attention to.

And judging from Ning Zitao's current performance, the other party wants to save money and costs.

Although this is excusable, it is not cost-effective in terms of the interests of the entire chemical plant.

After all, as a well-known chemical factory in Jiangzhou City, it has a lot of cooperation with the municipal government. If an accident occurs because of temporary savings, it will be more than worth the gain.

Suddenly there was a scream in the distance.

"problem occurs!"

Luo Fei and Zhou Fan hurriedly ran over there, and Ning Yitao also hurriedly followed.

After arriving at the scene of the incident, Zhang Wei was seen kneeling on the ground with white smoke rising from his arms.

The cuffs and clothes have been burned to pieces, and the skin inside is also covered by smoke. You can smell a burning smell. The thick smell should be that chemical raw materials have been poured on the body.

But their current location is not in the raw material factory area. They must have been contaminated by the processed products that were pushed out.

Luo Fei smelled the smell and immediately realized that there was strong acid in it, and it was corrosion caused by direct contact!

Several young people nearby were at a loss as to what to do.

Lin Jie and the others did not dare to wash with water rashly, and were a little panicked for a moment.

At this time, the guard came running over, quickly picked up a bucket of blue-gray powder from the side, and slammed it on.

The moment the cyan powder touched Zhang Wei, the smoke on the opponent's body was extinguished, and the sizzling movement on his arm stopped.

The sudden accident caused Zhang Wei to faint from the pain.

Looking at the arm, there was already a lot of blood flowing out, the skin was burnt, and there were some black particles attached to it.

But fortunately, the situation was not serious, and with the old man's prompt treatment, the arm was saved.

"Zhang Wei, Zhang Wei, wake up."

Lin Jie gave the other party a slap in the face, and whether he could wake him up was still a question.

He Xin and the police officers from the other three groups were stunned.

The doorman scolded the young people in front of him.

"Let me tell you what's wrong with you? You didn't memorize the emergency manual well, and you didn't listen when I asked you to pay more attention when something happened. Now that an accident has happened, each one of you has been scared into a grandson. It really embarrasses you guys. "

A few young people did not dare to say anything. Judging from the chemical protective suits they were wearing, they should be specially used to transport sealed chemicals. However, their reserved appearance and sluggish state could tell that they were newcomers.

But why exactly did such a thing happen?

Later, I learned that it was Zhang Wei and the others who wanted to enter the factory to inspect the outside of the workshop and look for anything suspicious, so they wanted to change clothes.

During the process of going to the refitting workshop, I encountered an accidental leakage of the sealing chemical fluid.

Zhang Wei wanted to go up and help, but he didn't expect it to splash directly on his arm, which led to the current situation, but it was still a false alarm.

Zhang Wei slowly opened his eyes and looked at the people on the side.

"Team leader, it hurts."

Luo Fei walked up with a wry smile on his face.

"You're really lucky. It's your arm. It would be troublesome if you hurt it elsewhere."

"As a police officer, you must not only be careful when doing your job, but also be careful. Pay more attention in dangerous places in the future."

Zhang Wei burst into tears in pain.

"Yes, I understand, captain, can I file a work-related injury report..."

Zhou Fan and other police officers next to him were all happy when they heard this. They were still thinking of reporting injuries after this time. The injuries were really not serious.

Luo Fei poked the opponent's head fiercely and laughed and cursed.

"Isn't it okay to report it to you? I served the people and almost burned myself to death. You have a lot of work-related injuries!"

At this moment, Ning Yitao, who came to his senses, stepped forward and grabbed one of the young men.

"What the hell is going on with you? Something will happen if you act like this!"

"If something big happens, can you take the responsibility?"

"ah!"

Seeing the furious Ning Yitao, several others rushed to break up the fight, but Luo Fei watched quietly.

I just want to keep an eye on this guy!

After a lot of tossing, it finally stopped. The new employees took him out, and Zhang Wei was taken back by Lin Jie and others for wound treatment.

Ning Yitao came to Luo Fei and others.

"Officer Luo, Officer Zhou, I'm really sorry. This matter was our negligence. We will definitely cooperate with the police force in any accountability."

Zhou Fan repeatedly stated that this incident was an accident and the team would handle it, so that the other party could feel at ease.

Ning Yitao still looked worried and uncertain.

"Mr. Ning, let's go into the factory area where the missing workers are and have a look."

Luo Fei reminded him not to miss the main point.

"Yes, yes, you two, please come with me."

Under the leadership of Ning Yitao, Luo Fei and Zhou Fan entered the workshop. There were people moving things and transporting chemical raw materials inside the workshop.

This is the processing department. Everything packaged here will be sealed and sent out for quality inspection.

That is to say, this is directly connected to the main tank area, which is considered the core area of ​​the entire chemical plant.

Although there are still many people working here, you can see the unnaturalness on their faces, which should be related to the major missing persons case that occurred a few months ago.

Although production is now resumed, both the people's hearts and the environment are no longer what they used to be.

Ning Yitao introduced the introduction as he walked, and Zhou Fan's head was confused.

Luo Fei looked at the other party quietly. Although his words were very appropriate, Luo Fei intuitively told himself that something was wrong with Ning Yitao.

When he came up there, Luo Fei noticed that there were a lot of security guards in the main tank area, and at the same time he stepped up his guard.

"Mr. Ning, what's going on over there? There are only two patrol security guards outside the factory area. Why are there so many here?"

Luo Fei asked directly.

"Ang, it's like this..."

"We have to increase supervision in the recent period, which is also a guarantee for existing employees. After all, people were panicked due to accidental disappearances in the past, so we must be more vigilant in the recent period."

"Then why not add security around the factory area, but arrange it in the main tank area, where few people usually come close."

"Just in case, Officer Zhou."

Ning Yitao quickly explained.

"New security personnel will be trained and hired after a period of time. By then, comprehensive protection will be in place. Thank you to the two police officers for their concern."

After explaining everything, Luo Fei said he wanted to leave first. He had gained something from today's investigation.

Ning Yitao invited the two of them to have a meal in the cafeteria. Zhou Fan had already declined, but Luo Fei suddenly said it was okay.

In this way, a group of people arrived at the company restaurant.

"Officer Luo, Officer Zhou, have you found anything in this investigation?"

"No, it seems like it's quite a challenge here."

While talking, Luo Fei's eyes remained on the other person and did not move away.

His observations were so keen that he certainly noticed Ning Yitao's somewhat relaxed state. Normally, such a person could stay in the chemical plant calmly after the incident because he had enough confidence not to be discovered.

I came here today ostensibly to investigate, but in fact I came here to frighten the mountain and shake the tiger.

The murderer and the instigator behind the scenes will definitely try their best to adjust their plans in response to their own appearance.

There are not many people I have come into contact with so far. Apart from a few chemical factory workers, there are only the guard who cleans Aunt Zhang's door and the material supervisor who comes to receive her.

If nothing else, Ning Yitao, the biggest suspect, took the lead in this matter.

But he didn't know how it happened...

"Mr. Ning, that's it for today. We will arrange it again in a while. I hope we can give you new progress by then."

"That's great. I hope the two police officers can help me find my brother. To be honest, I don't expect him to be alive anymore. I just hope that I can give him the truth. That's enough."

While speaking, Ning Yitao looked very sad.

Seeing the other party like this, Zhou Fan couldn't say much. After all, the brotherly love was deep and he could completely understand it.

When he came outside, Luo Fei glanced at Ning Yitao, who was a little relieved. He knew it was time to act.

Special measures are used in special times. Regardless of whether there is a search warrant or not, we must strike first, although we don't know whether it is too late.

But as long as you move quickly enough, you can catch the opponent's flaw!

"Mr. Ning, where is the bathroom?"

"I know, I'll take you there."

Zhou Fan signaled Ning Yitao to go ahead and take Luo Fei to the toilet. He had been here before anyway.

Just as the two of them rounded the corner of the wall, Zhou Fan suddenly changed his eyes.

He understood what Luo Fei was thinking when he winked at him just now.

In a place like this, apart from the factory director, the person in charge is the only one who can coordinate and take care of everything.

As the materials supervisor, Ning Yitao must be included in the key investigation targets!

Luo Fei's reaction was very quick. He had to check one last detail before leaving. This was also the key to breaking the situation, so Zhou Fan naturally had to cooperate with him.

"Luo Fei, what do you want to do?"

"I'm going to go up there and take a look. Something's not right in the main tank area. There should be surveillance around the factory area. I only need ten minutes. You can react with a counterattack and change the attention of the security guards a little, and I'll find an opportunity."

"OK."

Zhou Fan understood this and immediately rushed over, using his identity as a criminal investigation brigade to conduct routine interrogations on several of the security guards.

After all, they are just ordinary security personnel, and they can only cooperate with the police's work needs.

Luo Fei also acted quickly.

He simply did not believe that there would be so-called disappearances out of thin air here. Death was death, and murder was murder.

Hidden things in the world are nothing more than concealment!

There was something wrong with the main tank area, there was something wrong with the chemical raw materials and the missing personnel, so a guess had already emerged in Luo Fei's mind.

After bypassing the blind corner of the surveillance camera, he finally ran to the top. Because he was strong enough, he managed to cling to the edge of the wall with his arms and reached the target location.

The tall tank farm has escalators on both sides and signs warning of danger.

According to the instructions on the wall and the inquiry just now, Luo Fei knew that hydrofluoric acid was stored here!

This is no ordinary chemical raw material.

Because it is used for processing, the hydrofluoric acid here is of high concentration. After processing, high-purity catalysts and some original reagents for pickling metals can be produced.

"Good guy, such a large tank of hydrofluoric acid is indeed dangerous."

Luo Fei glanced around and saw that two security guards below were called over. As soon as they came back, they would interact here, so he had to be quick.

With the help of the escalator, Luo Fei took a deep breath, stepped forward three times, and shot upward like a sharp arrow, reaching the top within three seconds.

Time is running out, start investigating now!

The surrounding environment was normal, with nothing else except some maintenance tools, but suddenly Luo Fei noticed the filling port not far away.

Where the water is flushed and the original reagent is replenished, there are a few black marks near the filling port, which look like strangulation marks, but they are already very faint.

If it weren't for my extraordinary eyesight, I wouldn't have noticed it at all.

How come there are marks of strangulation?

After Luo Fei noticed the abnormality here, he immediately went to check and found several strangulation marks caused by dragging and twisting the thick hemp ropes, which should have been left by hanging from above.

It's not easy to leave marks on hard metal surfaces...

Luo Fei quickly took out his cell phone and checked. Fortunately, there was a signal at a high place, otherwise it would have been in vain.

You must know that the power of hydrofluoric acid is not weak. It is as acidic as concentrated sulfuric acid. Although it is not as good as aqua regia, it is more corrosive than aqua regia. Therefore, the entire interior is coated with hard metal, including the top. This is The most basic protective measures.

There should be no rope traces left here! Really weird!

After another investigation, Luo Fei could not find any other clues. No matter how powerful his sense of smell was, all he could smell was the smell of disinfectant and strong acid.

Time is almost up, the secret investigation must be clean and tidy!

Luo Fei jumped down quickly from the side, but when he landed, he pressed his hands on the escalator, making no sound except for a gust of wind.

Soon the two security guards who had been called away came back and looked up to see that they were safe and sound.

Seeing that there was no movement, they were relieved.

Although I don’t know why Director Ning wants to focus on supervising this place, he should just take money to do things and talk less.

Luo Fei rushed back from behind the wall, and Zhou Fan was already waiting there.

"How's it going?"

"Great harvest, let's go! Go back to the team and tell us!"

Luo Fei smiled mysteriously, and when Zhou Fan saw the other person's expression, he immediately knew what was going on.