civil forensic

Chapter 1059 Secret Base



Chapter 1059 Secret Base

Chapter 1059 Secret Base

After being taken to the police station, Sun Xiuwen's two girlfriends still acted as if they didn't care. Their boyfriends looked like ruffians, and it wasn't their first time to be in the police station, so they really didn't seem to care.

The parents of several people were relatively sober. After saying some nice words, they were busy making phone calls to the legendary capable people, but the effect was minimal.

Meng Chengbiao observed the few people coldly, and it only took him a short while to discover that one of the two seemingly carefree girls had a look of uneasiness in her eyes.

"Take all four of them to the interrogation room." Meng Chengbiao determined the target and said, "I will interrogate Liu Mingxue first."

"Yes." Faced with this kind of case, the police officers at the police station had no choice but to cooperate. They even had to vacate their own interrogation rooms.

At the same time, Jiang Yuan asked someone to open the unused gate on the hillside.

This house belongs to the uncle of Liu Mingxue's boyfriend Sun Jianyu, who works away from home and may not come back once a year. He gave the house to Sun Jianyu's parents to look after. Sun Jianyu secretly made a key and occasionally sneaked in to watch TV.

When a few friends found out, they gathered here and formed a secret base.

There weren't many people living in the village permanently, and the location of this house was a little off the beaten track. Several people pulled up the heavy curtains in the room and clamped them shut, making it completely dark from the outside.

This house made Sun Jianyu and others happy for a long time.

From the entrance, you can see traces of their happy life. Among the garbage discarded in the yard, there is still food that has not yet rotted, but the few flowers in the yard are basically dead.

Jiang Yuan was dressed neatly at the door, and after entering the yard, he started the inspection process.

For Jiang Yuan today, this means two security guards leading the way, four on-site investigation technicians following, a criminal photography technician who specializes in placing labels and taking pictures, and a photographer who records the entire process to accumulate evidence, complete the chain of evidence and facilitate the review of the death penalty.

With 9 people living in a house like this, it is still a bit stressful.

Jiang Yuan took a quick look and then arranged for personnel to conduct surveys on each floor in order to disperse the personnel and speed up the process.

After finishing the arrangements downstairs, Jiang Yuan went to the bedroom upstairs.

This is the real secret base and the place most likely to be the first crime scene. Jiang Yuan originally planned to inspect it from head to toe, but after taking a look inside, the LV5 crime scene investigation made him focus his attention on a pillow at the head of the bed.

There is no quilt on the bed in this bedroom, and the sheets are messy and dirty. The two pillows next to it are also a little yellowed due to years of use.

The only thing missing was a pillow near the door, which was white and obviously had been washed.

Jiang Yuan sighed, walked over with the horseshoe mirror, picked up the pillow, and studied it silently.

When a person is suffocated, some liquid often flows out of the mouth, which is usually not blood, so spraying luminol is useless. After the pillow is washed, the possibility of residue is even lower.

However, the pillow core is difficult to clean, especially for young people who are not very good at washing clothes. If you just rub it with detergent or liquid bubbles, there may still be residual evidence in the pillow core.

Jiang Yuan first waved for someone to come over and take a photo, then he put on his gloves and picked up the pillow to take a look. He didn't see any obvious stains, so he put it into an evidence bag and handed it to the person behind him, saying, "The evidence that has been obtained will be sent to the Criminal Investigation Center for inspection first."

This is a no-brainer for the general criminal police team. Not only can the evidence be sent alone, but everyone has to sit in a crowded place. It is even more impossible to send the evidence to the Criminal Investigation Center for immediate inspection. The Criminal Investigation Center is always overloaded because the leaders are unwilling to increase huge investments unless they have no other choice. Therefore, most of the evidence has to be scheduled.

That is, the homicide task force, and the leader of the special task force, may have some privileges. Of course, Jiang Yuan's privileges are more extensive. Even the criminal justice center in Beijing dare not delay the evidence he sent over.

After taking away the pillow, Jiang Yuan checked the sheets, mattress, etc., and sure enough, he found some suspected secretions on the sheets.

Jiang Yuan still asked someone to take a photo first, and then used scissors to cut off the part of the bed sheet containing secretions.

This may seem like destroying evidence, but in reality, it is really standard practice.

There are some young detectives who are either lazy or ignorant and will pack up the entire bed sheet and take it back. Usually, after being scolded a few times, they get used to it.

Not only does packing up the entire sheet waste space, it's also useless for testing.

A large roll of bed sheets was handed over to the technicians at the Criminal Science Center, but they didn't know which part to check, and even if they checked it again, they might make a wrong judgment.

On the other hand, there is no such thing as a real testing instrument that will give the result with a "beep". Whether it is a liquid phase or gas phase mass spectrometer, or any other instrument, the most common method is to take a piece of the sample - for a bed sheet, that is, to cut a piece off and then put it into the machine for analysis.

So, when a criminal investigator presents a complete bed sheet or towel, he either only took part of the fibers and did partial testing, or he took the wrong evidence.

Jiang Yuan also collected the remaining sheets. Although they were also evidence, he was not in a hurry to test them. He could use them later if needed.

Then, Jiang Yuan cut a part of the fabric of the mattress at the head of the bed. This part did not even need to be folded up, otherwise the police's evidence room would not be big enough.

After completing all these tasks, Jiang Yuan felt a little relieved and inspected the room again.

The bedroom used by several teenagers as a secret base was not clean and tidy at all. It was filled with all kinds of messy objects and the hygiene made the surveyors frown. To some extent, this could be considered a way to hide evidence.

buzzing...

The phone in my pocket vibrated.

Jiang Yuan frowned, took off his gloves, and took out his cell phone: "Hello, Lao Meng."

"Captain Jiang, the victim Sun Xiuwen's best friend Liu Mingxue and Liu Mingxue's boyfriend Sun Jianyu have confessed." Meng Chengbiao said this first, and then said, "Liu Mingxue asked Sun Xiuwen out to play that day, but Sun Xiuwen's boyfriend didn't come out because he had an appointment to make a video call with relatives overseas. The three of them had a party and drank at Sun Jianyu's uncle's house. During the party, they talked about cleaning up the house and waiting for relatives to come over, and then they had a dispute. Liu Mingxue said that Sun Jianyu was drunk and smothered Sun Xiuwen to death."

Jiang Yuan nodded: "What did Sun Jianyu say?"

"Sun Jianyu said that it was Liu Mingxue who grabbed Sun Xiuwen's neck first, and he covered her neck with a pillow to help."

Jiang Yuan breathed a sigh of relief. In this way, the murderer was limited to two people. It was just a matter of whether Sun Jianyu killed alone, or the two were the principal and the accomplice respectively, or there was no distinction between the principal and the accomplice.

Meng Chengbiao felt relieved after he finished speaking: "There was no third person at the scene. In this case, we may have to carefully distinguish the testimonies of the two people. However, there should be no doubt that the murderer was Liu Mingxue and Sun Jianyu or one of them."

"Where are the jeans?" Sun Xiuwen climbed down from the second floor by tying her jeans together. Sun Xiuwen didn't go back, so how did the jeans get back?

Meng Chengbiao coughed twice, then sighed and said, "Sun Jianyu claimed that he crawled in at night, put on gloves, put away his jeans, and then jumped down from the second floor."

"Jumped down?" Jiang Yuan recalled the traces downstairs and shook his head. It rained that night, just like the traces of the motorcycle in the wild, they were basically washed away by the water. It was not surprising that some of the footprints on the wall were damaged.

Meng Chengbiao thought Jiang Yuan was suspicious about the jumping off the building, so he said, "Sun Jianyu is in good health, with a good body shape and body shape. He is especially thin. He has filmed some parkour clips on Kuaishou. He is much more flexible than ordinary people. He should be able to jump off the building without getting hurt."

"You are quite thin. How thin are you?" Jiang Yuan paused and asked, "Can you kill Sun Xiuwen by yourself?"


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