The crackdown on organized crime began with the arrest of the mother-in-law.

Chapter 531 What right do you have to arrest me?

Aijia Supermarket Group was responsible for providing the money. The people who wanted to silence them didn't know that no matter how secretive they were, Qin Chuan could still find clues.

He was then placed in a separate cell, a decision made by the detention center and also arranged in advance by Qin Chuan.

However, less than half an hour after Qian Youcai was locked up, two prisoners suddenly got into a fight and were then locked in a small dark room, while Qian was later locked in a room with them.

Qin Chuan would never believe it if someone said there was no one manipulating things inside.

In fact, this was a premeditated and very swift act of murder to silence witnesses.

Chen Guobao played a key role in this.

Less than 15 minutes after Qin Youcai was detained in the detention center, someone came to visit Chen Guobao.

During the meeting, Chen Guobao reached a cooperation agreement with the other party, agreeing to kill Qian Youcai and receive a reward of 100 million yuan.

Chen Guobao's method of killing Qian Youcai was also very secretive. He used a drug to trigger an acute heart attack in Qian Youcai, which led to his death.

In this case, according to the forensic doctor, Qian Youcai's cause of death was indeed myocardial infarction, and there were no signs of poisoning, because the drug used by the other party was very special.

Small amounts of this drug can be used to treat heart disease, but high concentrations can trigger an acute myocardial infarction. Qian Youcai himself has heart disease, so this drug is exactly what he needs.

"Arrest him!"

Qin Chuan pointed at Chen Guobao and ordered the men Zhang Laifu had brought to take action.

"Officer...is there some misunderstanding? Although I was locked up with him, I didn't even touch him. There are security cameras there; if you saw it, go check the footage. I have absolutely no connection with him. What does his death have to do with me?"

Chen Guobao's method of poisoning was extremely secretive; it wasn't even visible on the surveillance footage. In reality, he only needed to sprinkle the drug given to him by the mole into the air.

If the concentration is high, Qian Youcai will experience an acute heart attack just by smelling it.

When Chen Guobao was arrested, no one said a word, especially the director of the detention center.

When the man was brought here today, Qin Chuan specifically instructed him to keep a close eye on his hands. He also arranged for someone to give him a separate cell and two police officers to guard him alone.

But the warden of the detention center never expected that despite his tight security measures, something would still happen to the other party.

Qin Chuan also knew that this director had nothing to do with Qian Youcai's murder, nor did he have any connection with Aijia Supermarket Group.

The mole was a deputy director of the detention center, and another guard on duty that day.

"Chen Guobao, do you really think you can hide the fact that you used ketocaine to induce a heart attack in Qian Youcai, leading to his death?"

Chen Guobao was stunned when Qin Chuan spoke.

He didn't know the name of the drug; he only knew that the other party told him that if he sprinkled the drug into the air, he would get a million dollars.

When Qin Chuan revealed in front of so many people that Chen Guobao had triggered Qian Youcai's heart attack with some kind of drug, many people were surprised, but two of them turned pale.

Qin Chuan snorted coldly.

He turned his head and looked at a man standing next to the director in the crowd.

"Deputy Director Zhang, are you saying... am I right?"

When Deputy Director Zhang saw Qin Chuan looking at him, his legs trembled uncontrollably.

He had no idea how Qin Chuan had discovered it.

Logically speaking, it should be absolutely impossible.

From the moment he received the drugs, to arranging for Chen Guobao to meet with outsiders and then handing over the drugs, the entire process was known only to himself and one of his trusted subordinates.

In fact, Deputy Director Zhang didn't do much. He only asked one of his subordinates, Xingfu, to give the medicine to Chen Guobao. He didn't get involved in anything else.

"Zhang Laifu, arrest Director Zhang as well!"

Upon receiving Qin Chuan's order, Zhang Laifu disregarded whether the person was the deputy director or not, and immediately led two men to handcuff him.

Deputy Director Zhang's face changed drastically, and he shouted, "Qin Chuan! What right do you have to arrest me? Even if you are the deputy director of the Public Security Bureau, you have no right to arrest me arbitrarily!"