The crackdown on organized crime began with the arrest of the mother-in-law.

Chapter 1502 Analysis of Panoramic and Detailed Photographs

"Understood, Captain Yang!" Xiao Wang replied, picked up his camera, and prepared to take pictures. Then, Xiao Yang and Xiao Sun, following the principle of "from far to near," gradually approached the body in the ditch and began to conduct a close-up on-site investigation, focusing on the inside of the ditch, the silt and sewage around the body, and the condition of the body's surface.

They first examined the entrance and exit of the ditch. The entrance was located on the south side of the intersection on the eastern section of Jianshe Road, connected to the city's drainage pipes. There was an iron grating at the entrance, covered with rust and household garbage. Some fallen leaves and plastic bags were stuck in the gaps of the grating, but no obvious suspicious traces were found. The exit of the ditch was located on the western section of Jianshe Road, also connected to the city's drainage pipes. There was also an iron grating at the exit, which was intact and showed no signs of being pried or damaged. No suspicious traces or physical evidence were found in the surrounding area.

They then proceeded along the edge of the ditch, approaching the body from its east side, carefully examining the silt and sewage at the bottom. They shone flashlights into the ditch, looking for any suspicious items or traces. The silt at the bottom of the ditch was about 15 centimeters deep, mixed with a large amount of fallen leaves, plastic bags, scraps of paper, and other household garbage, as well as a few small stones. No obvious murder weapon or bloodstains were found, nor were any items that could identify the deceased, such as an ID card, mobile phone, or wallet.

"Team Leader Yang, we didn't find any obvious bloodstains or weapons, such as daggers or machetes, in the silt and sewage at the bottom of the ditch," Xiao Sun reported to Xiao Yang while shining a flashlight into the bottom of the ditch. "There's only some household garbage and small stones in the silt, which looks no different from ordinary ditch silt. However, we can take a small amount of sewage and silt samples and send them to the laboratory for testing to see if there are any traces of blood or other suspicious components."

Xiao Yang nodded and said, "Okay, that's a good idea. Although we can't see the bloodstains with the naked eye, there might be trace amounts of blood diluted by the sewage and silt. We'll extract small samples of sewage and silt, label them, and send them to the lab for trace evidence testing to check for bloodstains, poisons, or other substances. Also, we'll carefully examine the silt for tiny clothing fibers, hair, or other minute traces or evidence related to the case."

Xiao Sun agreed and took out several sterile test tubes, sealed evidence bags, and tweezers from the investigation kit. He carefully used the test tubes to extract about 5 milliliters of sewage sample from the sewage around the body, put it into the test tube, sealed it, and labeled it "Sewage sample from around the body, extraction location: near the deceased's head, extraction time: 7:30 a.m. on the same day". Then, he used the tweezers to extract a small amount of silt sample from the silt around the body, put it into the sealed evidence bag, marked it, and put it into the investigation kit along with the sewage sample.

During the sample collection process, Xiao Sun discovered a small amount of fibrous material in the silt surrounding the body. The material was dark in color, almost identical to the color of the coat worn by the deceased. He quickly and carefully used tweezers to extract a few fibers, placed them in a sealed evidence bag, and labeled it. He said, "Team Leader Yang, we have extracted a few dark fibers. The color matches the deceased's coat. Our preliminary assessment is that they may have come from the deceased's clothing. We will send them to the laboratory for further testing to confirm the material of the fibers and whether they are indeed from the deceased's clothing."

Xiao Yang walked over to Xiao Sun and carefully examined the dark fibers. He said, "Good, the extraction was very thorough. Although these fibers may seem insignificant, they could contain important clues. We must examine them carefully later. Also, continue to examine the mud around the body to see if there are any other fibers, hair, or traces of blood, weapon fragments, or other physical evidence."

The two continued their investigation of the ditch area surrounding the body, while Xiao Wang filmed the entire process, documenting the collection of trace evidence. Multiple photos were taken of each sample collected and each suspicious trace discovered, ensuring a clear record of the location, shape, and extraction process. After more than ten minutes of meticulous examination, they extracted two fine black hairs from the silt surrounding the body. These hairs were identical in color and thickness to those previously found on the railing, and were marked and placed in their investigation kit.

By this time, the close-up examination around the ditch was basically complete, and no other obvious suspicious traces or evidence had been found. Xiao Yang stood up, stretched, looked at the body in the ditch, and said to Xiao Sun and Xiao Wang, "Next, we will focus on examining the surface of the body to analyze the deceased's basic characteristics and preliminary cause of death. Note that the body is submerged in sewage and silt, so the traces and evidence may be fragile. The examination must be done gently to avoid damaging the traces on the body's surface. Xiao Wang, focus on photographing every detail of the body's surface, especially key areas such as wounds and torn clothing."

"Understood, Captain Yang!" Xiao Sun and Xiao Wang responded in unison. Then, Xiao Yang and Xiao Sun carefully walked to the edge of the ditch, squatted down, and, using the light of their flashlights, began a detailed examination of the body's surface. Because the body was completely submerged in sewage and silt, most of the body parts were covered in silt and could not be directly examined. They could only use sterile cotton swabs to carefully remove the silt and sewage from the surface of the body, gradually revealing the full appearance of the body before conducting their examination and analysis.

They first cleared the mud from the body's head. As the mud was gradually removed, the outline of the deceased's head became clearer. The deceased was male, approximately 35 to 45 years old, with short, black hair about 5 centimeters long, disheveled, covered in mud and sewage, and some hair was matted. The deceased's face was swollen and contorted, with pale skin and slight signs of putrefaction. His lips were purple, his eyes were closed, his eyeballs were protruding, and his conjunctiva was congested, indicating that he had been dead for several days. The deceased's nasal cavity and mouth were filled with mud and sewage, but no obvious foreign objects or bloodstains were found.

"Team Leader Yang, no obvious external injuries were found on the deceased's head. There were no wounds, hematomas, or fractures," Xiao Sun reported to Xiao Yang while cleaning the mud off the deceased's head. "The face is swollen and contorted, the lips are purple, and the conjunctiva is congested. These are normal phenomena that occur when a body is immersed in water and after death. The preliminary judgment is that the head is not the site of fatal injury."

Xiao Yang nodded and carefully observed the deceased's face.