Criminal Investigation Case 3 18: Fudan Student Poisoning Case
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墨書 Inktalez
On April 1, 2013, Lin Senhao, a graduate student at Fudan University, poured toxic chemicals into the water dispenser of his dormitory. Two weeks later, his roommate Huang Yang died from liver failure. 0
 
After the incident, Lin claimed he only intended to play a prank on his roommates for April Fool's Day. 0
 
Following the first trial, Lin was sentenced to death, prompting hundreds of Fudan students to petition the court for a reduction in his sentence. 0
 
During the trial, Lin frequently contradicted his father and changed lawyers multiple times, leaving the case shrouded in mystery. What was the truth behind it all? 0
 
Should Lin Senhao be sentenced to death? 0
 
Incident Occurrence Location: Shanghai, China 0
 
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On March 31, 2013, Lin Senhao walked out of the laboratory carrying a yellow bag, heading toward the dormitory. 0
 
It was a Sunday, and all his roommates had gone out to have fun, leaving Lin alone. 0
 
After locking the door to his room, he poured the highly toxic chemical into the water tank of the dispenser. 0
 
Then he took out a syringe from the bag and injected the remaining chemicals into the dispenser. 0
 
Afterward, he separated the chemical bottle and syringe. 0
 
Upon returning to his dormitory, Lin felt extremely anxious. He sat at his computer desk and searched online to see if dimethylnitrosamine had any odor. 0
 
In reality, Lin knew more than anyone else about the properties of dimethylnitrosamine. Just two years prior, he had conducted live experiments on seventy mice. During those experiments, he discovered that dimethylnitrosamine could cause acute liver damage. 0
 
In those live experiments, two white mice died immediately after injection, while others gradually succumbed over several days. The remaining fifty-eight mice eventually recovered after a month. 0
 
All this data was documented in his thesis and had been published in both domestic and international journals. It was clear that he knew and fully understood that dimethylnitrosamine was toxic. 0
 
 
Three hours after Lin Senhao poisoned, his roommate Huang Yang returned to the dormitory. What surprised Huang Yang was that Lin Senhao never spoke to him after he returned. Until the next day, April Fool's Day, Huang Yang wanted to go to the water dispenser to get a glass of water after getting up. At this time, Lin Senhao was lying on the bed observing Huang Yang's every move. When Huang Yang filled the cup with water, he drank it all. At that time, Huang Yang had a violent cough, accompanied by a dry heave. When he recovered, he took the basin and went out to wash. As soon as Huang Yang walked out of the door, Lin Senhao hurried out of the dormitory with his mobile phone. When Huang Yang finished washing, he saw that there was no one in the dormitory, so he went to the library to study. But soon after sitting down, Huang Yang felt very uncomfortable and kept vomiting, and his body temperature was as high as 40 degrees. Huang Yang thought he had a cold, so he went to the school clinic for infusion, and then returned to the dormitory to rest. After learning that Huang Yang was physically abnormal, Lin Senhao seemed very panicked and searched the Internet again for the hazards of dimethylnitrosamine, but he only selectively looked at some situations to give himself some psychological comfort. Huang Yang did not get better after the infusion, but became more and more serious. After that, Huang Yang asked Lin Senhao to help him do a B-ultrasound to see if he had gastric perforation. After a series of examinations, Lin Senhao told Huang Yang that there was nothing wrong with his liver and stomach. Huang Yang also thought that he was suffering from a cold, so he lay in the dormitory to continue resting. In this way, Huang Yang missed the best time for treatment. Seeing that Huang Yang's symptoms were getting worse and worse, Lin Senhao kept comforting himself. He thought Huang Yang would survive like most of the mice he studied, but two days later, Huang Yang was admitted to the intensive care unit. After Huang Yang was admitted to the intensive care unit, the attending doctor suspected that Huang Yang was poisoned by food or drinking water. He asked Huang Yang's senior to help take blood and urine samples to the testing agency. When Lin Senhao learned about the test, he quickly put the bucket outside to try to let the dimethylnitrosamine evaporate as soon as possible, and then returned the bucket to the dormitory manager and put it between the 19 buckets. When the testing agency tested the sample, because dimethylnitrosamine is very rare and not within their testing range, the test results were inconclusive. 0
 
 
Hearing this, Lin Senhao finally put down his worries, so the next day, Lin Senhao came to the hospital and visited Huang Yang through the glass window. At that time, Huang Yang's father felt very strange. Why could Lin Senhao, as Huang Yang's roommate, be so calm when he saw Huang Yang with tubes inserted all over his body? Time passed by, but the hospital still could not find out the cause of Huang Yang's illness, so the doctor could not carry out targeted treatment. On April 4, after another roommate returned to school and heard about Huang Yang's situation, he hurried to the hospital to visit Huang Yang and checked Huang Yang's medical records. The acute liver damage written on the medical record caught his attention. After repeatedly checking the documents, he found that Lin Senhao had experimented with dimethylnitrosamine to cause acute liver damage in mice, so he quickly asked his senior to test this substance. As expected, dimethylnitrosamine was found in Huang Yang's urine, drinking water, and bucket. This substance is very rare, and no one would bring it back to the dormitory. They suspected that someone had deliberately poisoned him, and then they quickly called the police, and the police immediately came to the scene to investigate. After a lot of investigation, Lin Senhao was confirmed as a major suspect in the case. On April 12, the 12th day after Huang Yang was poisoned, Lin Senhao was summoned for criminal investigation. When the police questioned him, Lin Senhao refused to admit his crime. At first, he told the police that he poured a mixture of formalin into the bucket. Obviously, the police would not just listen to his one-sided words. Even if it was formalin, why did he pour this thing? 0
 
 
 
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