Wrongful Death Criminal Investigation

Ming Tang gave Tang Yan some time to calm down.

Just like Jiang Han's analysis, if Qiu Ziyu ate Shi Bishuang by accident, where is the source of the poison?By what means was it eaten by mistake?If it was a manslaughter, who was the murderer going to poison?Is it targeted poisoning or large-scale poisoning?If it was murder, what was the murderer's motive?

"Zhao Jingwen, tell me about your situation."

Zhao Jingwen stood up and went to the multimedia tablet in front, picked up a marker pen, dragged the two whiteboards that were not written on to the middle, and wrote on the whiteboards, "The person who found the dead body was the cleaner Liu Fu. According to the According to Liu Fu’s testimony, he entered the bathroom at 11:30. Combined with the video captured by surveillance, it can be confirmed that the time he entered the bathroom is accurate. According to the information we have, Liu Fu has not read any books. His hometown is in the north, and his son is in university. After coming to Chuncheng, he set up a family and started a business in Chuncheng. He and his wife came to Chuncheng from their hometown a few years ago to help their son and grandson. His wife died of illness last year. The child is now in kindergarten and his grandmother takes care of him. He does not want to trouble his son and daughter-in-law when he is free. He went to KTV as a cleaner. As far as we know, he had no conflict with the deceased, and it can even be said that he was not familiar with him, so the suspicion can be ruled out.”

"The manager of the KTV led people to open the toilet door and recorded a video of the whole process. Their testimony combined with surveillance can also eliminate suspicion."

"Xu Peiwen was the deceased's younger brother, and he provided three clues that are beneficial to solving the case.

First: On the night of the 23rd at No. 117, Fenghuang Road, Qiu Ziyu and Qiu Shaoyang had a physical conflict. Combined with the testimony of Fu Chengyu and Tang Yan, this can be confirmed.

Second, they got together last night because Qiu Ziyu wanted to propose to his girlfriend Luo Tiantian and asked them to give advice. Everyone’s testimony is the same on this point, so the credibility is also very high, and it also proves Director Jiang’s judgment from the side , Qiu Ziyu did not commit suicide.

Third, he gave Qiu Ziyu's abnormal performance that night. The specific time point was dinner. They had dinner together at about 06:30. At that time, Qiu Ziyu had already developed diarrhea. The people present It can almost be proved that it can match the initial symptoms of poisoning, that is to say, Qiu Ziyu was poisoned before eating dinner, and this can also correspond to the time of poisoning deduced by Director Jiang. "

"From Fu Chengyu's testimony, we can know that Qiu Ziyu cherishes his own life very much, has no bad habits, encounters no setbacks, and has no self-harm behavior. Except for the conflict with Qiu Shaoyang, he has not had any other conflicts with other people recently. He The testimony of Xu Peiwen can also be matched with the testimony of Xu Peiwen, which also confirms our judgment from the side. According to him, the pinhole on Qiu Ziyu's arm was left by helping Luo Tiantian practice acupuncture. source of dense pinholes in the arm."

"As for Qiu Ziyu's roommate Zhao Hai, he also denied that Qiu Ziyu had bad habits, self-harm, and setbacks. The testimony of Fu Chengyu and Xu Peiwen can also be matched, but from him, we learned another thing Something that may be related to this case. Qiu Ziyu had a girlfriend named Lin Susu two years ago, who committed suicide by jumping off a building last year. Lin Susu’s boyfriend at the time, Shen Xingzhi, insisted that Lin Susu’s death was not an accident. The case was filed, and this Shen Xingzhi is a second-year graduate student of the Department of Chemistry in their school, with outstanding abilities, and has the ability to independently produce Shibishuang."

"Except for the testimonies of these few people, no one else has provided any favorable clues, and the testimonies are all similar, and there is nothing worthy of special attention."

After finishing speaking, the two whiteboards were already filled with writing, and the four whiteboards that were originally pure white had become a large black area.

Zhao Jingwen continued, "I asked people to go out at dawn to verify the time points provided by Xu Peiwen. Based on years of experience, I don't think Xu Peiwen lied. He has a close relationship with Fu Chengyu and Qiu Ziyu since they were young, so it can be ruled out initially. The suspicion of the two of them committing the crime. The two of them did not have a high evaluation of Zhao Hai, but overall they were not bad. In school, Qiu Ziyu and Zhao Hai had the best relationship. They had known Zhao Hai for several years. Although the relationship was not As good as Qiu Ziyu, but I don't know how many times better than the rest of them. Judging from Zhao Hai's attitude, he should also regard Qiu Shaoyang as a good friend. However, regular investigations on them are still necessary .”

Mingtang nodded in agreement, and when Zhao Jingwen returned to her seat, Mingtang walked to the front of the whiteboard, picked up the red pen in the card slot, and drew circles on the names of Qiu Shaoyang and Shen Xingzhi, "These two people are our receptionists." Let's focus on the investigation targets. One is Qiu Shaoyang, who had a conflict with Qiu Ziyu recently, and the other is Shen Xingzhi, who has a grudge against Qiu Ziyu because of his girlfriend's suicide. Both of them have strong motives for committing crimes. I will apply for a search warrant and summons from above. A full investigation has been launched against both men."

"According to the description of the deceased's friend, the possibility of the deceased's suicide can basically be ruled out. Accident or murder, no matter what it is, we must find the source of the poison as soon as possible and find out the poisoning route."

Xiao Ding asked in a low voice, "If it was murder, why did the murderer use arsenic? The lethality rate of arsenic is not [-]%, isn't this very contradictory?"

Mingtang has already thought about this point, and he expressed his analysis, "Possibility [-]: The murderer can easily get Shi Bishuang. Possibility [-]: Shi Bishuang has special meaning to the murderer." Possibility [-]: The murderer didn't want Qiu Ziyu to die so much, so he used Shi Bishuang to give the deceased a chance of survival. Possibility [-]: The murderer's psychology was highly distorted. Jiang Han said that people poisoned by arsenic would be very painful, and the murderer was Want the dead to suffer."

"Shi Bishuang is a controlled chemical drug, so it's not easy to get it?"

Jiang Han added, "The sources of arsenic trioxide 2 are actually very limited. Hospitals, chemical factories, chemical laboratories, black market purchases, and self-made. It is worth noting that self-made, the murderer needs to have a good level of chemical knowledge and practical operation ability."

Jiang Han thought for a while and said: "Three yang compounds and arsenic are widely used in the medical field now, but the management of this kind of toxic drugs is very strict in hospitals, and it is not realistic to steal them from hospitals."

"Not necessarily. What if the murderer is a doctor?"

The deceased's girlfriend, Luo Tiantian, was not just a ready-made doctor. She had already started an internship in the hospital in the second semester of her junior year. It was unlikely that outsiders would go to the hospital to steal medicine, but it was not difficult for insiders to steal medicine.

After what Zhao Jingwen said, Luo Tiantian's suspicion skyrocketed.

Lan Ning didn't think so, "But according to the testimony of the deceased's friend, the relationship between Luo Tiantian and Qiu Ziyu was very good, to the point where they were talking about marriage. Why did she kill her fiancé?"

Chen Yanjia said: "But in many homicide cases, the murderer is found to be someone close to the deceased."

Zhao Jingwen nodded in agreement, and took over the topic: "No matter what, this Luo Tiantian still wants to make her the key investigation object."

"Shen Xingzhi has the motive to kill, and also has a good level of chemical knowledge! He has the production ability! His possibility is not small."

Rather than guessing wildly, it is better to throw everyone out. Nothing is more reliable than evidence. Mingtang regained the right to speak, "I will arrange the next work. Changfeng, you lead people to find out the social relationship of the deceased, focusing on the deceased Or that their parents, relatives and friends have not had any enemies recently. Lanning, you lead someone to investigate clearly the trajectory of the deceased’s actions on the day of his death, who he had contact with, what he drank or ate, and any details must not be missed. Zhao Jing Wen is responsible for conducting a thorough investigation of all the people brought back to the bureau today, as well as the potential suspects who appeared in their testimony."

"Jiang Han, when the family members of the deceased come to the bureau to identify the corpse, you should try your best to persuade the family members of the deceased to agree to the autopsy. I need an accurate autopsy report. Tang Yan, you, the person who brought the trace examination and physical evidence, to the deceased Carry out a blanket search of the place where he lived before to see if he can find any clues."

"Chen Yanjia, I need you to sort out all the cases of arsenic poisoning that occurred in our city in the past half a year, focusing on the screening of acute arsenic poisoning, screening the medical records of three yang arsenic poisoning in each hospital, and investigating clearly the causes The reason for their poisoning. Xiao Ding, take someone to investigate the chemical factories, chemical laboratories and various hospitals in our city to see if there is any loss of arsenic, and then cross-reference it with Yan Jia's information."

After arranging the work, it was already past five in the morning.

Everyone stayed up all night and was already very tired at this time, but Ming Tang had to continue to say: "I will issue a notice to assist the police from the sub-bureau and the police station to assist in the investigation. This case is different from every case we have handled in the past. It's different, we have to solve the case before the public opinion is fully fermented, otherwise our entire Spring City police will be very passive when the public opinion is fermented, and neither of you and I can afford this responsibility! Do you understand?"

"Understood!" Everyone said in unison.

Then everyone left the meeting room, returned to their respective work positions and began to arrange the next work.

The author has something to say:

Shaoyang is coming soon!