Cop Universe

Chapter 45 Finding the Source of the Poison
To detect a poisoning case, the most important thing is to determine where the source of the poison came from. Basically, once the source of the poison is determined, the nature of the poisoning case can be determined.

The nature of poisoning cases is nothing more than three types, the first is poisoning by oneself, the second is accidental poisoning, and the third is poisoning by others.

Strictly speaking, the first case is self-harm, the second case is an accident, and only the third case is a criminal case.Therefore, the police must rule out the first two situations before they can conduct criminal investigations.

After confirming that the deceased died of poisoning, Huang Qifa immediately wanted to find the source of the poison, and this approach to handling the case was correct.

Forensic officers immediately began examining food and drink left on the table.Huang Qifa continued to ask the deceased's friends.

"Have you noticed that the deceased has had any unusual behavior recently?" Huang Qifa asked.

Everyone shook their heads, and Huang Qifa continued to remind: "Think about it carefully, it's okay if you change your mood, such as becoming irritable, restless, panic, nervous, etc."

Huang Qifa wanted to know if the deceased had any suicidal tendencies.After all, people in Xiangjiang live under a lot of pressure, and many people have mental problems. It is not a new thing that they suddenly choose to commit suicide because they can't think about it.

Teaching assistant Xue Youlin immediately said, "Sir, does it count if you have too much academic pressure? As far as I know, Yu Zhenghuang is writing his graduation thesis recently, but it seems that the writing of the thesis is not going well."

"Why didn't it go well?" Huang Qifa asked immediately.

"I don't know the details. I'm just a teaching assistant, and I'm not good enough to guide graduate students to write a thesis. Moreover, the thesis is a personal research result, so I don't want to ask too much detail."

Xue Youlin paused, and then said: "Actually, writing a dissertation is not going well, which is a common occurrence in school. Many students are worrying about their graduation thesis. When I was taking my degree, I was also worrying about my dissertation every day. !"

Huang Qifa nodded, and then asked: "As far as you know, did Yu Zhenghuang, the deceased, have feuds with anyone?"

"I'm not too sure about this. Maybe Lin Zhijian knows that the two of them have classes together every day." Assistant teacher Xue Youlin replied.

Lin Zhijian hurriedly took a step forward: "Sir, Yu Zhenghuang should not have any enemies. I am the same tutor as him, and we study together every day. I haven't heard that he has any enemies.

Moreover, we are all students, we have not stepped into the society, and we don't have too complicated interpersonal relationships. We usually have two points and one line between home and school, so it is impossible to offend any enemies. "

"The family situation of the deceased, did they owe huge debts?" Huang Qifa continued to ask.

"I know a little about this. His family background is neither good nor bad. His parents are ordinary office workers. I don't remember exactly what they do. But I haven't heard that he has any debts." situation." Lin Zhijian replied.

"That means the family is harmonious and both parents are alive." Huang Qifa then asked: "Then did the deceased have any emotional disputes?"

"He is single, and he broke up with his ex-girlfriend for almost half a year! I don't know who dumped who, but I haven't seen his ex-girlfriend come to pester him in the past six months, and he hasn't advanced his girlfriend. It should be It's good to get together and get away." Lin Zhijian replied.

Huang Qifa asked these questions, in fact, to judge how likely the deceased was to commit suicide.

For example, emotional depression, broken love, being chased for debts and revenge, etc., will all be the reasons for suicide, so Huang Qifa also focuses on inquiries in this regard.

He Jiahui next to him couldn't stand it anymore. Huang Qifa asked for a long time, but he didn't mention the core question.

So He Jiahui directly asked the forensic evidence: "Is there any container for storing cyanide found on the body of the deceased?"

This forensic evidence is the same as the forensic evidence of the murder case in the police academy restaurant last time. He turned his head and glanced at it, thinking that this is not the student policeman who solved the case in the police academy!

Looking at the police officer's card on He Jiahui's chest again, he realized that he has graduated and is now an official policeman.

Since the other party is an official policeman, there is no doubt about disclosing the case, so the forensic officer said, "No container for storing cyanide was found on the deceased."

"Did you find it on the nearby ground, in the corner, or in the crevice of the sofa?" He Jiahui continued to ask.

"No, I have checked the corners and the crevices of the sofa, and there is nothing suspicious." Forensic replied.

He Jiahui nodded, turned his head and said to Huang Qifa: "There is a high probability that it can be concluded that the deceased did not commit suicide!"

"How do you know it wasn't suicide!" Huang Qifa asked.

"If the deceased committed suicide, why can't he find a container for storing cyanide on his body? He can't conjure cyanide out of thin air!" He Jiahui replied.

"Maybe the deceased threw away the container!" Huang Qifa argued.

"Where to throw it? You must know that after taking cyanide, it will attack within 2 minutes. If you throw away the container storing cyanide, it must not be thrown far away. But I didn't find it nearby."

He Jiahui paused, and continued: "Besides, if the deceased was carrying poison with him and was about to commit suicide by taking it, how could he have the heart to hide the poison!"

Huang Qifa was stunned speechless, but he also had to admit that the deceased did not commit suicide by taking poison.

"Since it wasn't suicide, it's very likely that he killed it." Huang Qifa looked at the friend of the deceased and asked, "Has any of you left before? For example, to go to the bathroom or something."

Everyone looked at me and I looked at you, and shook their heads, expressing that none of them left.

At this time, the forensic side also gave the result.

Just listen to Fazheng's introduction: "I have inspected the food on the table, eating leftover birthday cakes, durian crisps, butter crisps, egg tarts, potato chips, and fruits, and no toxic reactions were found in all the foods.

In addition, I also tested the plastic knife for cutting cakes, the boxes for durian crisps, butter crisps, and egg tarts, and the plates for potato chips and fruits, and no toxic reactions were found.

Finally, I tested the beer on the table. Only the can of beer in front of the deceased found a cyanide reaction, and no poisonous reaction was found in other people's beer. "

"That is to say, the source of the poison is the can of beer that the deceased drank!" Huang Qifa asked fiercely, "Where did this poisonous beer come from?"

"We ordered the wine, and the waiter delivered it." Someone replied immediately.

"Where is the waiter in charge of serving wine to this table, get him here quickly."

Huang Qifa gave an order, and the waiter was called over immediately.

"Sir, I'm wronged, I didn't poison you!" The waiter explained miserably.

"Don't be nervous, I didn't say you were poisoned." Huang Qifa went on to say: "I want you to recall carefully, you must explain all the details of the process of serving wine to this table, and don't be confused. It's good for you to keep it a secret."

The waiter thought for a while and answered, "There are seven people at this table, and they also ordered seven cans of beer. Then I went to get the beer and brought it in an ice bucket. When I took it, the beer cans were all still there." It's not open!"

"Have you met anyone or anything in between? Has the beer ever left your sight?" Huang Qifa continued to ask.

"The beer is chilled, and if the ice cubes melt, the taste will be bad, so I didn't delay after I got the beer, and it was delivered directly, without stopping in between, and the ice bucket was always in my hand, and never left my beer. Sight." The waiter replied.

"Okay, let's continue, what will happen after you deliver the wine?" Huang Qifa continued to ask.

"At that time, I put the ice bucket on the table and said that the beer you ordered has arrived, and then they took the beer from the ice bucket, and they opened the beer cans themselves. After delivering the beer, I left Yes." The waiter replied.

"That is to say, they took the beer themselves, instead of you delivering it to everyone?" Huang Qifa continued to ask.

"That's right, they took it by themselves. I didn't touch it during the whole process." The waiter nodded.

Huang Qifa nodded slightly. If the waiter's description is correct, then the waiter's suspicion of committing the crime can basically be ruled out.

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(End of this chapter)