civil forensic

Chapter 297
Binhu spring greening landscape project site.

Inside the blue color steel plate, an acrylic slab bridge directly enters the color steel room from the door.

When Jiang Yuan saw this Banqiao, he could see that the Changyang City Criminal Police Detachment was bound to win.

Normally, it would be enough to build Banqiao from the door to the side of the corpse, and it was also a temporary measure. When the evidence collection was almost over, Banqiao would be taken away.

In fact, the units that can use Banqiao are all very particular units.What's more, it is still made of transparent acrylic material.

For example, the Banqiao of the Ningtai County Bureau is not only made of steel plates, but the number is also small, and the current survey usually does not like to bring it.It's too heavy, and it's troublesome to carry it. Sometimes, if your colleagues don't cooperate, it's useless for you to build it.

If it was a small scene, everyone would walk into the scene directly, and these things would only be used for reasons such as too much blood on the ground.

Ten years ago, metal plate bridges were useless, and being trampled on the spot was often unavoidable.

For the criminal police detachment of Changyang City, the situation is actually similar. Hundreds of bridges are laid out to form a road, which is definitely ordered by the leader, and the current surveyors will do this.Otherwise, even if they proposed to their girlfriends, they would not waste their time and energy so much.

Yu Wenshu was standing at the starting point of Banqiao.He is the person in charge of the scene, and the work is quite heavy.

There is no requirement for the level of the person in charge of the backlog of homicide cases, but there are existing cases.

Seeing Jiang Yuan approaching, Yu Wenshu, who was directing, softened his face, walked two steps with a smile, and greeted him: "Is the road easy? There is no speeding."

"Probably not photographed." Jiang Yuan said.

Yu Wenshu: "It's okay to take pictures, come back and find me, I'll erase it for you. 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 already been transported." gone."

Jiang Yuan listened and nodded, first looked at the footprints Yu Wenshu said...

In front of him, there are about a thousand footprints...

This is the 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 has no turmoil in his heart, and he doesn't want to start the case from the footprints at all.

After collecting these footprints, 30 cows died of exhaustion.

"Let's go to the corpse first." Jiang Yuan wanted to find the murderer's footprints from the room, and then look at the direction of the footprints.

However, if the footprints were found from inside the room, the footprints outside would be of little significance, at most pointing to a direction of escape.In other respects, the inside and outside of the room are most likely to be similar.

Of course, Jiang Yuan didn't need to elaborate on these words, he just stepped on the bridge to the scene.

Yu Wenshu followed him directly.

Huang Qiangmin has the pressure of the battle rankings, and Yu Wenshu is the same.

It is almost unacceptable for the criminal police detachment of a dignified provincial capital city to rank low in combat power.Not only can't rely on the back, but also strive to be the first.

Shannan Province is a blood-sucking provincial capital. Not only does it have advantages in economic, cultural and educational policies, but it also has requirements in terms of public security and health.

If the relevant person in charge can't do it, it's actually very simple. The leaders of the brother units of other prefecture-level cities, whoever ranks first, and whoever can rank first in a row, may be transferred to the provincial capital to replace the provincial capital. to do this.

The state of Changyang City this year is very good. As far as the criminal police detachment is concerned, it is rare to keep the record of solving all current murder cases.But if this case cannot be solved today, Yu Wenshu will be under a lot of pressure.

The body was on the second floor of the color steel house.

As the main structure, the color steel house is 40 meters away from the gate of the construction site. 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 was similar, with a desk in the middle and a large safe in the corner. The corpse looked like it was in the photo. It was on the desk and was hit on the head with a blunt instrument to death. The so-called bloodstains...is the desk a small beach.

It is estimated that it formed slowly, so when the murderer left, his feet were not stained with blood.

Jiang Yuan silently glanced at Yu Wenshu, the bloodstains and footprints mentioned by this man are a bit unreliable.

"The evidence is a bit weak, but the current case should be easier to solve than the backlog." Yu Wenshu's reasoning still makes sense.

Jiang Yuan asked: "No monitoring, no witnesses?"

"No." Yu Wenshu knew what Jiang Yuan meant, and said, "The construction site here is half-suspended, and the remaining few migrant workers were playing money in the color steel house where they lived, and they didn't come out. .It has already been recorded, and there are no loopholes for the time being."

Whether a person has an alibi depends not only on the authenticity of the alibi he provided, but on the other hand, it also depends on the state of the questioning.

Most people's psychological quality is actually not good enough. They can lie to their parents or girlfriend without blinking an eye. When the company holds an annual meeting, they have to laugh at every show, so there is no need to hide it.

Moreover, when faced with the interrogation of the criminal police, the performance of a normal person is definitely not a state of expressionless, forcibly suppressing emotions.

Therefore, most of the people's alibi was exposed during the interrogation by the criminal police.This is also one of the reasons why the criminal police have to ask in person instead of calling.

The false sense of security over the phone is exactly what an inquiry should not be.

A few migrant workers with no special background, as long as their daughters don't live in kennels, they shouldn't be able to escape the interrogation of the criminal police. of.

Jiang Yuan looked around again, and asked again: "Didn't you find the murder weapon?"

"No, the murder weapon is guessed to be a stick like a steel bar picked up at the construction site, and it was taken away." Yu Wenshu said a little helplessly: "Now I am making a list to see who has 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 outsiders robbed and killed people, it would be more difficult to solve the case."

If it is a direct relationship, the case will be easier, and this kind of robbery case is easy to solve, and it belongs to the case solved by the route of interpersonal relationship.

But if not, the workload of the case will be relatively large.If you take the route of interpersonal relationship, the workload will be multiplied by 10 for each additional layer of interpersonal relationship.

For example, some cases with ghosts often take a long time to solve.It is not how difficult it is to detect, but it will take a long time to find out the insider, and then check the relationship network of the insider.

Jiang Yuan first confirmed the situation outside the scene, and almost understood Yu Wenshu's thoughts.

Now, the best evidence is the scene and the corpse.

As for fingerprints and footprints, it's not that there are none, but there are so many that it's impossible to determine which one is useful.

"Then let me see the scene first." Jiang Yuan said, "Have you already scanned this side?"

"Only took the most basic." Yu Wenshu replied.

Jiang Yuan took the core directly: "Nothing?"

"No." Yu Wenshu shook his head slightly.

In a real criminal case, the investigation and sweeping of the scene is not a thorough sweep of every detail.It is also hierarchical.

Normally, the obvious ones are scanned first, such as bloody handprints and bloody footprints, extracting bloodstains to remove corpses, etc.Secondly, sweep the signs, such as doorknobs, necks of dead bodies, window frames, stiff toilet paper, etc.

If the information on the murderer can be found in the above two, then the current survey task is basically over, and there will be no further scanning.

For example, there may be fingerprints on the victim's sweater, but in the case of bloody fingerprints, there is no need to try to take these fingerprints.

Even when there is too much information on the scene, some evidence will not be taken in full, such as the sweat-stained bed sheet, and the spot survey that swept away the entire bed sheet is often the most scolded.

As far as it is concerned, there are fingerprints and DNA everywhere at the scene, but there is no DNA that is obviously the murderer.

"I called the two of you over to help." Yu Wenshu felt that it was almost done, so he went out to call for someone, and left the scene by himself.

After a while, two policemen came over with boxes and other equipment.

"Brother Jiang, we finally meet. I'm He Guohua, the trace inspector from Shuidong District." The first person to come in was He Guohua who called Jiang Shen and Jiang Ye in the group.

He Guohua is in his 30s, with a mustache on his chin, wearing glasses, slightly fat, and a very pale face.

Jiang Yuan was also stunned before matching himself with He Guohua in the group.

"You can just call me Jiang Yuan." Jiang Yuan was still polite in person. He wanted to take out a cigarette, but thought he was at the scene, so he didn't move.

"This is Xiao Bo, Wang Bo, my apprentice." He Guohua introduced the young man who followed, carrying two boxes in his hands.

Wang Bo also looks like a talented person. Needless to say, those who have been admitted to the Criminal Police Detachment of Changyang City in the past few years are all guys who want to reduce the dimensionality and attack them. .

Jiang Yuan asked: "Have you illuminated it with a survey light here?"

"I've taken photos, and I've also taken some fingerprints, but it doesn't feel right." He Guohua answered directly.Wang Bo watched curiously.

Jiang Yuan said "En", and stood in the middle of the room, entering a state of contemplation.

He's trying to reconstruct a crime scene.

Any on-site investigation actually needs to reconstruct the crime scene, but it is not as direct and complete as bloodstain analysis.

As far as Jiang Yuan is concerned, LV4's crime scene investigation + LV5's bloodstain analysis work together, even if there are very few bloodstains at the scene, they can still get something useful.

(End of this chapter)