Construction site of Binhu Spring Greening Landscape Project.
Inside the blue color steel plate, an acrylic board bridge is built directly from the door into the color steel room.
When Jiang Yuan saw this Banqiao, he knew that the Changyang City Criminal Police Detachment was bound to win.
Normally, Banqiao just needs to be put up from the door to the body. Moreover, these are temporary measures. When the evidence collection is almost completed, Banqiao will be taken away.
In fact, units that can use Banqiao are very particular units. What's more, they are made of transparent acrylic.
For example, the Banqiao of the Ningtai County Bureau is made of steel plates, and the quantity is small. People usually don’t like to carry it with them when surveying. It’s too heavy, and it’s troublesome to move. Sometimes, even if your colleagues don’t cooperate, you build it.
It’s no use either.
If it is a small scene, everyone will enter the scene directly on foot. These things will only be used due to reasons such as too much blood on the ground.
If it were 10 years ago, metal bridges would have been useless, and it was often difficult to avoid being trampled on site.
For the Changyang City Criminal Police Detachment, the situation is actually similar. Hundreds of Banqiao are laid out to create a road. It is definitely the leader’s order that the investigators will do this. Otherwise, even if they propose to their girlfriend, they will not
What a waste of your time and energy.
Yu Wenshu stood at the starting point of Banqiao. He was the person in charge of the scene, and his work was quite heavy.
There is no requirement for the level of the person in charge of the case in the backlog of homicide cases, but there is a requirement for current cases.
Seeing Jiang Yuan coming, Yu Wenshu, who was directing, softened his expression. He smiled, took two steps, and asked, "Is the road easy? You're not speeding, right?"
"Probably not taken." Jiang Yuandao.
Yu Wenshu: "It's okay if I took the photo. Come back to me and I can help you get rid of it. Well, this is the scene. There are footprints on the ground and blood stains in the room on the second floor. I immediately thought of you. However, the body has been transported.
gone."
Jiang Yuan nodded as he listened, and first looked at the footprints Yu Wenshu mentioned...
In front of him, there were probably thousands of footprints...
This is a construction site. Not only is the ground not hardened, but there is also a lot of floating soil. If electrostatic equipment is used, it is estimated that more footprints can be locked.
Jiang Yuan's heart was untroubled, and he had no intention of starting the case from his footprints.
After collecting these tracks, 30 cows were exhausted.
"Let's go see the body first." Jiang Yuan wanted to find the murderer's footprints from inside the room, and then look at the direction of the footprints.
However, if the footprints are found from inside the room, the footprints outside will not be of much significance. They can at most point to an escape direction. In other respects, the information provided inside and outside the room will most likely be the same.
Of course, Jiang Yuan didn't need to elaborate on these words, and walked to the scene on Banqiao.
Yu Wenshu followed him directly.
Huang Qiangmin is under pressure to rank in the combat power rankings, and so is Yu Wenshu.
It is almost unacceptable that the criminal police detachment of a dignified provincial capital city is at the bottom of the ranking list. Not only can it not be ranked behind, but it must also strive to be number one.
Shannan Province is a provincial capital with a blood-sucking model. It not only has advantages in economic, cultural and educational policies, but also has requirements in terms of public security and health.
If the relevant person in charge cannot do this, it is actually very simple. Leaders of brother units in other prefecture-level cities, whoever ranks first, and whoever can rank first continuously, may be transferred to the provincial capital to take over.
You have to do this.
Changyang City is in very good shape this year. As far as the criminal police detachment is concerned, it is rare to maintain a record of solving all current murder cases. But if today's case cannot be solved, Yu Wenshu will be under great pressure.
The body is on the second floor of the Caigang building.
As the main structure, the color steel room is thirty or forty meters away from the construction site gate. There are six rooms downstairs and six rooms upstairs, but they are all relatively large, in the form of a large office.
The room at the scene of the incident is similar. There is a desk in the middle and a large safe in the corner. The body looks like in the photo. It was on the desk. It was hit on the head with a blunt object to death. The so-called blood stain... is here on the desk.
of a small beach.
It probably formed slowly, so by the time the murderer left, there was no blood on his feet.
Jiang Yuan silently glanced at Yu Wenshu. The blood stains and footprints he mentioned seemed a bit unreliable.
"The evidence is slightly weak, but the current case should be easier to solve than the backlog case." Yu Wenshu's reasoning still makes sense.
Jiang Yuan asked: "There is no surveillance and no witnesses?"
"No." Yu Wenshu knew what Jiang Yuan meant and said: "The construction site here is half-stopped. The remaining migrant workers were playing money in the color steel houses where they lived and did not come out.
.A record has been made, and there are no loopholes for the time being.”
Whether a person has alibi depends not only on the authenticity of the alibi he provides, but also on the state of the person at the time of questioning.
In fact, most people's psychological quality is not up to standard, and they can lie to their parents or girlfriends without blinking an eye. When the company holds its annual meeting, they have to laugh at every performance, so there is no need to hide it.
Moreover, when facing the interrogation of the criminal police, a normal person's behavior is definitely not expressionless, suppressing emotions forcibly.
Therefore, the alibi of most people is revealed during the interrogation process by the criminal police. This is one of the reasons why the criminal police ask questions in person instead of on the phone.
The false sense of security that comes with being on the phone is exactly what you should not have in an inquiry.
Several migrant workers with no special background should not be able to escape the interrogation of the criminal police as long as their daughters do not live in kennels - these people at the construction site must be key suspects and will not be let off with just a few questions.
of.
Jiang Yuan looked around again and asked: "You haven't found the murder weapon yet?"
"No, the murder weapon is probably a stick-shaped object such as a steel bar picked up at the construction site, which was taken away." Yu Wenshu said a little helplessly: "We are making a list now to see the people who have disputes with the construction site, former employees
There are some, but the number of people is a bit too large, and the list is not complete. If someone from outside committed robbery and murder, this case would be more difficult to detect."
If there is a direct relationship, the case will be easier. This type of robbery is easy to solve, and it is a case that is solved through interpersonal relationships.
But if not, the workload of the case will be relatively large. If you take the interpersonal relationship route, then the workload will be multiplied by 10 for each additional layer of interpersonal relationships.
For example, some cases involving moles often take a long time to detect. It is not how difficult the detection is, but it takes a long time to find the mole and then check the mole's network.
Jiang Yuan first confirmed the situation outside the scene and almost understood what Yu Wenshu was thinking.
Now, the best evidence is the scene and the body.
As for fingerprints and footprints, it's not that there are none, but there are so many that it's impossible to determine which ones are useful.
"Then let me check the scene first." Jiang Yuandao: "Has this been scanned?"
"Only the most basic ones were taken." Yu Wenshu replied.
Jiang Yuan went straight to the core: "Nothing?"
"No." Yu Wenshu shook his head slightly.
In a real criminal case, the scene is not swept in detail. It is also hierarchical.
Normally, you would first scan the obvious ones, such as bloody handprints and footprints, extract the blood and take away the corpse, etc. Secondly, scan the obvious signs, such as door handles, corpse necks, window frames, stiff toilet paper, etc.
If the above two can scan the murderer's information, then the task of the investigation is basically over, and no further scanning will be carried out.
For example, there may be fingerprints on the victim's sweater, but if there are bloody fingerprints, there is no need to try to remove these fingerprints.
Even when there is too much information at the scene, some evidence will not be collected at all. For example, the bedsheets stained with sweat, and those who swept away the entire bedsheets are often scolded the most.
As of now, there are fingerprints and DNA everywhere at the scene, but there is no DNA that is obviously that of the murderer.
"I'll call two people to come over and help." Yu Wenshu felt that it was almost done, so he went out to call someone, and then left the scene.
After a while, two police officers came over with boxes and other equipment.
"Brother Jiang, we finally meet. I am He Guohua from Shuidong District." The first one to come in was He Guohua, who was called Jiang Shen and Jiang Ye in the group.
He Guohua is in his thirties, has a mustache on his chin, wears glasses, is slightly chubby, and has a very white face.
Jiang Yuan was also stunned before he matched up with He Guohua in the group.
"Just call me Jiang Yuan." Jiang Yuan was still polite in person. He originally wanted to take out a cigarette, but after thinking about it at the scene, he didn't move.
"This is Xiao Bo, Wang Bo, my apprentice." He Guohua introduced the young man who followed him, carrying two boxes in his hands.
Wang Bo also looks like a talented person. Needless to say, those who have been admitted to the Changyang City Criminal Police Detachment in the past few years are all guys who want to come and fight with dimension reduction. But after entering the unit, even if they really reduce the dimension, they will not show anything.
.
Jiang Yuan asked: "Have you used a survey light to illuminate it here?"
"I've taken photos and taken some fingerprints, but they don't seem to work." He Guohua answered directly. Wang Bo looked at it curiously.
Jiang Yuan said "En" and stood in the middle of the room, entering a state of meditation.
He's trying to reconstruct the crime scene.
Any on-site investigation actually requires the reconstruction of the crime scene, but it is not as direct and complete as blood stain analysis.
For Jiang Yuan, with the combination of LV4's crime scene investigation and LV5's bloodstain analysis, he could get something useful even if there was very little bloodstain at the scene.
