Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

The bruises, distributed on the right side of the chest and abdomen, are irregular in shape and appear to have been caused by a beating, further confirming that the deceased had fought with the assailant and suffered beatings before death. Additionally, there is a slight ligature mark around the deceased's neck, bluish-purple in color, approximately 1 cm wide, with blurred edges, suggesting it was made by a soft object such as a towel or strip of cloth. It is highly probable that the assailant first used a towel or cloth to strangle the victim before using a single-edged knife to stab them in the chest, causing death.

"The ligature marks on the victim's neck indicate that the murderer used a soft object to strangle the victim before stabbing him, controlling him and preventing him from struggling, before stabbing him in the chest with a knife," Yang Lin said slowly, carefully observing the ligature marks on the victim's neck. "This also explains why there are scratches on the victim's arms and dirt and fibers under his fingernails. The victim must have struggled after being strangled and controlled by the murderer, but ultimately, he was still stabbed to death."

Yang Sen nodded and said, "That's right. The murderer's methods were quite cruel and seemed quite skilled, so it was most likely a premeditated murder, not a spur-of-the-moment decision. Let's continue examining the victim's lower body to see if we can find any more clues, such as the characteristics of the victim's clothing or other wounds or marks."

Then, Yang Lin and Yang Sen carefully used shovels and brushes to clean the dirt off the lower half of the deceased's body, moving gently to avoid damaging any traces on the surface of the body or the clothing. After more than half an hour of cleaning, the lower half of the deceased gradually became clear. The deceased was wearing a pair of dark blue jeans, which were also covered with dust and dirt, as well as some dark red stains, the same color as the bloodstains on the T-shirt, most likely the deceased's blood. There were two obvious tears at the knees of the jeans, the shape of the tears was irregular, and the edges were jagged, looking as if they had been torn by weeds or gravel, or cut by a sharp weapon during a struggle with the murderer.

The deceased was wearing a pair of black cotton socks, which were covered in dust and mud and had become very dirty. There was a tear at the toe area of ​​the socks, indicating that the deceased was not wearing shoes. Both feet were covered with small scratches and bruises. The scratches were irregular in shape, most likely caused by weeds or gravel. The bruises were also irregular in shape, suggesting that the deceased had been beaten. This further confirms that the deceased had been beaten and struggled violently before his death.

They carefully examined the victim's jeans pockets and T-shirt pockets, finding them empty. There were no items inside—no ID card, bank cards, mobile phone, cash, or anything else that could identify the victim. Clearly, the murderer had removed all of the victim's belongings before killing, disposing of, and burying the body, in order to conceal the victim's identity and prevent the police from identifying the victim and tracing the murderer through these items. This also indicates that the murderer had a strong counter-investigation awareness, and it is highly likely that this was a premeditated murder and body disposal case.

“There were no items on the deceased that could prove their identity. The murderer must have taken them intentionally to hide the deceased’s identity,” Yang Lin said seriously. “Moreover, the murderer’s methods were cruel, and they had a strong sense of counter-investigation. The fact that it was premeditated and planned suggests that the murderer most likely knew the deceased or had some kind of grudge or conflict with them, such as economic disputes, emotional disputes, or personal grievances. After killing the deceased, they chose to dispose of the body, bury it, hide the deceased’s identity, and clean up the traces at the scene in order to evade legal punishment.”

"Furthermore, the deceased's clothing was quite ordinary: a black long-sleeved cotton T-shirt, dark blue jeans, and black cotton socks. There were no special markings or valuables, indicating that the deceased was most likely an ordinary farmer, worker, or unemployed person with average economic conditions," Yang Sen added. "We have photographed and recorded all the information on the body surface, and extracted physical evidence such as fibers and hair from the body surface. Subsequently, we will combine this with the footprints, tire tracks, fibers, paint, and other physical evidence extracted from the scene to further analyze and deduce the identity of the murderer, the means of transportation, and the motive for the crime."

After completing the surface examination of the body, Yang Lin and Yang Sen conducted a detailed examination of the pit's interior, carefully observing the soil and searching for any suspicious traces or evidence, such as hair, fibers, or fragments of the murder weapon left by the killer. However, after more than half an hour of meticulous examination, they found no other suspicious traces or evidence in the soil, except for fragments of the victim's clothing, hair, and the fibers previously extracted. They also found no fragments of the single-edged knife used as the murder weapon. It is highly likely that the killer took the murder weapon with him after killing the victim, leaving it at the scene. This further indicates that the killer had a strong awareness of counter-investigation.

At this point, the on-site investigation work was temporarily concluded. Yang Lin and Yang Sen carefully organized all the trace evidence collected at the scene, including plaster samples of footprints, tire imprints, fibers and hair of various colors, torn fabrics, black paint, and fibers and hair extracted from the surface of the corpse. They placed each item in an evidence box, clearly labeling it with the extraction location, time, and person who extracted it, ensuring that every piece of evidence was traceable and verifiable. Subsequently, they handed the evidence box over to a designated person for safekeeping, preparing for subsequent testing and analysis in the laboratory.

Meanwhile, Captain Lu Chuan was on-site, listening to Wang Shuai's preliminary report on the investigation of the surrounding villages. While Yang Lin and Yang Sen were conducting the on-site investigation, Wang Shuai had already led three investigation team members, as directed by Lu Chuan, to Qinjiagou and the surrounding villages to conduct a comprehensive door-to-door investigation, focusing on finding witnesses, screening suspicious persons and clues, and understanding whether there had been any missing persons, suspicious persons traveling in or out of Qinjiagou and the surrounding villages recently, or any unusual occurrences, in order to find more clues for solving the case.

Wang Shuai is a key member of the investigation team of the Municipal Criminal Investigation Detachment. With many years of experience in investigative work, he is highly skilled in communication and adept at uncovering suspicious clues and screening suspects through interviews and investigations. He has participated in solving numerous major criminal cases, and through meticulous interviews and investigations, he has found countless crucial clues, providing strong support for solving cases. (End of Chapter)