eurekapd Chapter 1489 Conducting Interpersonal Relationship Surveys
Chapter 1489 Conducting Interpersonal Relationship Surveys
"First, we will conduct a thorough investigation into Zheng Guobin's interpersonal relationships, focusing on his suppliers, customers, and debtors, especially the holders of unfamiliar phone numbers who contacted him before the incident, to investigate whether there were any conflicts or disputes. Second, we will conduct a detailed investigation of Zheng Guobin's suburban warehouse and surrounding areas, expanding the scope of the investigation, collecting more trace evidence, and comparing it with the clues collected at the scene. Third, we will trace Zheng Guobin's driving route on the day he disappeared, retrieve surveillance videos along the way, and investigate whether he came into contact with any suspicious persons or vehicles. Fourth, we will combine the previously identified perpetrator profile and SUV vehicle information to investigate people associated with Zheng Guobin and whether there are any people who match the profile. Fifth, we will continue to dredge the riverbed to find the murder weapon, and at the same time, we will investigate the source of the murder weapon based on Zheng Guobin's social relationships."
Xiao Yang added, "Our technical team will immediately go to Zheng Guobin's suburban warehouse to conduct a comprehensive investigation, focusing on extracting traces and physical evidence from the ground and goods, comparing them with footprints, fibers, and metal residues extracted from the scene, and at the same time, investigating the roads and vegetation around the warehouse to look for traces left by the perpetrators." Xiao Sun also said, "We will adjust the scope of the surveillance investigation based on the warehouse location, track whether the black SUV has appeared in the warehouse and surrounding area, and compare it with Zheng Guobin's driving trajectory."
After the meeting, each group acted swiftly, launching a new round of investigations focusing on Zheng Guobin. Xiao Zhou led his team, concentrating their investigation on Zheng Guobin's debt relationships and the unfamiliar phone number he used to contact him before the incident. Bank statement verification revealed that Zheng Guobin recently owed three suppliers a total of over 50 yuan in payments. One of the suppliers, Li Jianguo, had repeatedly pressed him for payment, and the two had previously argued. Meanwhile, the technical team, using communication technology, identified the owner of the unfamiliar phone number that had contacted Zheng Guobin before the incident as Zhao Lei, an unemployed man with a prior criminal record for theft, and a relative of Li Jianguo.
Xiao Zhou immediately led his team to the residences of Li Jianguo and Zhao Lei to conduct an investigation. Li Jianguo stated that he had indeed repeatedly urged Zheng Guobin to pay the debt, and the two had argued, but he was sleeping at home at the time of the incident, as testified by family members, and provided an alibi. Zhao Lei stated that he contacted Zheng Guobin before the incident on behalf of Li Jianguo to collect payment for goods, and that he had never met Zheng Guobin in person, nor did he have a clear alibi for the time of the incident. Xiao Zhou collected DNA samples from Li Jianguo and Zhao Lei and sent them to the laboratory for comparison with the DNA profiles of the male perpetrators extracted from the scene. He also retrieved their activity trajectories and vehicle information to investigate whether they were related to the black SUV.
Meanwhile, Xiao Yang and Xiao Sun led the technical team to conduct a detailed investigation of Zheng Guobin's suburban warehouse. The warehouse floor was covered with a thin layer of ash, and multiple footprints were extracted. One of the footprints matched the pattern of a male diamond-patterned rubber-soled shoe found in the shallows at the scene, and both were size 43. Black cotton fibers extracted from a corner of the warehouse, after preliminary testing, were found to be completely consistent with the fiber composition of clothing belonging to the male perpetrators at the scene. A small number of dark red spots were found on the ground at the warehouse entrance. After a preliminary test with benzidine reagent, they were identified as bloodstains. After extraction, they were sent to the laboratory for comparison with Zheng Guobin's DNA, confirming that the bloodstains were left by Zheng Guobin.
"The bloodstains at the warehouse entrance were splattered blood. Based on the shape and location of the bloodstains, it is speculated that this may be the primary crime scene. Zheng Guobin was attacked with a sharp weapon at the warehouse entrance, and his blood splattered on the ground. He was then dragged by the murderer to hide on the Zhangjiagou River embankment," Xiao Yang analyzed. At the same time, he asked Xiao Sun to use plaster to fix the footprints extracted from inside the warehouse. "This footprint matches the footprints at the scene, indicating that the perpetrator had entered the warehouse or was active in the vicinity of the warehouse, further confirming the connection between the murderer and Zheng Guobin's warehouse."
The laboratory quickly provided the bloodstain comparison results: the bloodstains at the warehouse entrance were indeed left by Zheng Guobin. Meanwhile, the DNA samples of Li Jianguo and Zhao Lei did not match the DNA profiles of the male perpetrators extracted from the scene, ruling them out as suspects. Although the primary crime scene was identified and some suspects were eliminated, the perpetrators' identities remained a mystery. Key questions such as the owner's information for the black SUV, the identity of the female perpetrator, and the motive for the crime remained unresolved.
Xiao Zhou led his team to continue investigating Zheng Guobin's interpersonal relationships. They discovered that in addition to debt disputes, Zheng Guobin also had an improper relationship with a woman named Liu Hong. Liu Hong had no stable job, and her husband, Wang Hao, was a truck driver with a volatile temper and a prior criminal record for intentional assault. Xiao Zhou immediately led his team to investigate Liu Hong and Wang Hao. They found that Wang Hao was 180 cm tall, thin, smoked, and wore diamond-patterned rubber-soled shoes, which closely matched the profile of the male perpetrator. Furthermore, the vehicle Wang Hao was driving was a mid-to-low-end black SUV of a certain brand, and the model matched the tire tracks found at the scene.
“This Wang Hao is highly suspicious!” Xiao Zhou immediately reported the situation to Li Ming. “Wang Hao’s physical characteristics, clothing, and vehicle information all match the profile of the perpetrator, and his wife had an improper relationship with the victim, indicating a clear motive.” Li Ming immediately ordered: “Immediately launch a full investigation into Wang Hao, track his movements during the time of the crime, retrieve his vehicle’s driving records, and investigate whether there is any connection between his vehicle and the crime scene or the warehouse. At the same time, collect DNA samples from Wang Hao and Liu Hong and compare them with the DNA profiles of the male and female perpetrators extracted from the scene.”
Xiao Zhou led his team to act swiftly. Through surveillance footage, they discovered that Wang Hao's black SUV had appeared in the suburban warehouse and the area around Zhangjiagou River dam between 1 and 4 a.m. on the day of the incident, its driving trajectory perfectly matching the suspect's predicted route. Simultaneously, the team extracted a small amount of black cotton fibers and dark red spots from the trunk of Wang Hao's vehicle. Preliminary testing showed that the fibers matched those found on the clothing of the male suspect at the scene, and the dark red spots were suspected to be bloodstains.
However, when Xiao Zhou and his team prepared to summon Wang Hao, they discovered that Wang Hao and Liu Hong had vanished. No one was home, their phones were switched off, and their vehicle was not parked, suggesting they had fled to avoid punishment. Xiao Zhou immediately reported the situation to Li Ming, who promptly deployed police forces to pursue Wang Hao and Liu Hong, while also issuing a wanted notice offering a reward for information leading to their whereabouts.
Although the deceased was identified as Zheng Guobin, and key suspects Wang Hao and Liu Hong were identified, their escape posed a new challenge to the investigation. Xiao Zhou led his team to continue tracking Wang Hao and Liu Hong's movements, investigating the residences of their relatives and friends, and retrieving surveillance footage along their route. Simultaneously, they conducted a thorough examination of Wang Hao's vehicle and residence, collecting more trace evidence to support their conviction and sentencing.