After returning to the police station with Xiong Yufang, the police immediately launched a comprehensive and in-depth investigation without stopping. They are well aware of the complexity and seriousness of the case, every detail may become the key to uncover the truth, so do not dare to have the slightest slack.
Forensic departments quickly on the two children's bodies carried out meticulous autopsy examination, the cold autopsy room, filled with the pungent smell of medicine, forensic scientists look focused and serious, they hold professional tools, carefully examined every inch of the children's body tissues, do not let go of any place that may hide clues. After a long and rigorous examination process, the cause of death of the children was finally determined - death by poisoning. The composition of the fatal poison in the forensic doctors under the professional analysis gradually clear, is a very toxic and rapid onset of the poison, once into the body, will quickly erode all organs, resulting in organ failure, pain.
At the same time, the police officers responsible for investigating the background and relationship between Xiao Xue and Xiong Yufang are also working closely. They went around, looking for anyone who might know what was going on, questioning Xiao Xue and Xiong Yufang's friends and family, neighbors and colleagues, and even some people with whom they had only brief contact. From these people's mouths, the police obtained a lot of valuable information, gradually outlined the complex and twisted relationship between the two.
A neighbor who has known Xiao Xue for many years, when questioned by the police, said with a worried face: "Xiao Xue used to be a very kind and enthusiastic person, but since she met that Xiong Yufang, the whole person has changed. She became more and more vain, spending money like water, but also often quarrel with the family. I just feel that that Xiong Yufang isn't a good person, she surrounds Xiao Xue all day long and definitely doesn't have a good heart." The neighbor's eyes revealed a hint of anger and regret, she recalled the once cheerful Xiao Xue, couldn't help but shake her head repeatedly.
A former colleague of Xiong Yufang revealed to the police: "Xiong Yufang this person ah, in our unit when the hands and feet are not clean, often take advantage of colleagues. She also especially love to lie, all day to make up some of their own miserable experience to win the sympathy of others, and then from others to cheat money. Her life style is also very problematic, and she has been involved with many men. I already knew that something would happen to her sooner or later, I never thought that she would do something so cruel." The former colleague frowned, expressing extreme disgust at Xiong Yufang's behavior.
In the course of their investigation, the police also discovered numerous anomalies in Xiong Yufang's bank account. Her account had frequent fund transactions and a large number of incoming payments from unknown sources, while at the same time many large sums of money were quickly transferred out to unknown destinations. The police speculated that these funds are likely to be related to the money she cheated from Xiao Xue, she through various means of Xiao Xue's money transferred to their own accounts, and then wantonly squandered or used to repay their own huge debts.
When investigating Xiong Yufang's communication records, the police found that she had close contact with some people with suspicious identities before the murder. The phone numbers of these people frequently appeared in her call records, and most of the calls were centered late at night or in the early hours of the morning, and the length of the calls was long. The police tracked the origin of these numbers through technical means and found that some of them belonged to undesirable elements in society, most of whom had criminal convictions and were involved in various types of illegal and criminal activities such as theft and fraud. This makes the police more convinced that Xiong Yufang in the planning and implementation of the crime process, it is likely to get the help or participation of these people.
With the depth of the investigation, the police gradually focused on the Xiong Yufang in a series of movements before the crime. They accessed a large number of CCTV footage, from Xiao Xue's home near the street monitoring to the city's various transportation routes, carefully check Xiong Yufang's trajectory of action during that period of time. Surveillance footage shows that Xiong Yufang in a few days before the murder frequently in and out of Xiao Xue's home in the neighborhood, each time to enter and leave appear to be panicked, in a hurry. Moreover, on the day of the child poisoning, Xiong Yufang in Xiao Xue's home near a store to buy some food and drink, the police suspect that she was then the poison mixed into the food.
In order to further confirm this speculation, the police carried out a detailed investigation into the types and brands of food and beverages purchased by Xiong Yufang, and compared them with the remains of the food that the child had consumed found in Xiao Xue's home. At the same time, they also visited the store where Xiong Yufang purchased the food, and asked the store owner whether he noticed Xiong Yufang's unusual behavior during the purchase. The store owner recalled: "When that woman came to buy something that day, she looked very nervous and kept looking around. She bought some snacks and drinks that children like to eat, and I didn't care too much about it at that time, I didn't expect something like this to happen." A look of horror and remorse appeared on the store owner's face, how could he not expect the things he sold in his store to become a murder weapon.
The police also found some traces related to the poison in Xiong Yufang's rented house. In the corner of her room, there was a small, well-hidden box with some powdered substances remaining in it. The police immediately sent these substances to the laboratory for testing, and the results confirmed that the powder was highly consistent with the composition of the poison that caused the child's poisoning. In addition, in the garbage can of the rental house, the police found a crumpled note with some strange symbols and numbers written on it. After careful analysis and deciphering, the police found that these symbols and numbers are likely to be the secret language of the transaction between Xiong Yufang and the drug dealers, which indicates that she obtained the poison through illegal channels.
When Xiao Xue was questioned, although her mental state was still very fragile, she tried to recall some key details of her time with Xiong Yufang. She told the police that a few days before the children's accident, Xiong Yufang had been extraordinarily attentive to the children, often buying them all kinds of snacks and toys, and offering to take care of them. Xiao Xue thought at the time that Xiong Yufang was acting out of kindness, but now she thinks that it was all part of her plot. Xiao Xue's eyes filled with remorse and self-blame, she kept blaming herself for not seeing Xiong Yufang's true colors earlier, leading to this tragedy.
As more and more evidence gradually surfaced, Xiong Yufang's criminal suspicion became more and more. The police organized this evidence one by one, forming a complete chain of evidence, enough to prove that Xiong Yufang is the mastermind of this poisoning case. However, Xiong Yufang in the face of police investigation, still refused to admit guilt, she tried to continue to make up lies to cover up their own crimes. But her flawed defense in front of the iron evidence seems pale, the police firmly believe that the truth will eventually come out, justice will be done.