Chapter 328 Sprayed Blood
The case report meeting lasted for about an hour and a half.
To be honest, the work done by the QZ City Criminal Investigation Detachment is very meticulous.
Some of the questions raised by the members of the crime team have been thought of and verified, but no useful clues have been obtained.
“What suggestions do you have next?”
"Li Chu, let's go to the scene first."
"Yes, let's go to the scene first."
Lu Chuan also nodded in agreement. Although a week has passed at the scene, there are still many things High exploration value.
No matter how many photos the QZ City Criminal Investigation Detachment took, it would be better to go to the scene and take a look.
The experts from the serious crime team sitting here all have their own set of case handling routines, and going to the scene is everyone’s first choice.
As far as Lu Chuan is concerned, he may have to do a detailed second site survey.
Theoretically speaking, it is impossible for the murderer to kill someone without leaving any traces at the scene.
However, in some cases, these traces may be very hidden. Even if the murderer has deliberately cleaned the scene, there may be fewer traces remaining, but they will never be absent.
What Li Donglin meant was that the crime team should go to the scene as soon as possible and listen to the report at the scene, which is better than anything else.
"Okay, Captain Qin, please make arrangements here and take the crime team to the scene."
"Li Chu, I brought some equipment when I came here. They are all in the car. I will drive myself."
This time Lu Chuan did not drive his own car, but used the detachment's ten-year-old cool road. Ze.
The last time I came to Qinzhou to handle a case, I knew that some of the equipment here was not complete, so Lu Chuan brought some portable ones.
Otherwise, the role of his current survey may be limited.
“No problem, do you need us to send a driver?”
"No, I can just drive it myself."
Half an hour later, Qinzhou International Apartment.
“This apartment was completed five years ago and is considered a landmark building in Qinzhou. The monitoring facilities inside are relatively complete, but we checked it over and over and found nothing suspicious.”
Outside the apartment, Wang Song got out of the car and searched for the location of the building's surveillance cameras.
“Are there any surveillance layout plans and architectural drawings of the building?”
"Yes, it's in the archives. I'll have someone bring it over."
The apartment property manager is very cooperative and seems to be quite experienced. After all, he has been cooperating with the QZ City Criminal Investigation Detachment for a week.
“Our judgment is that it is most likely someone in the apartment building committed the crime.”
Qin Hui pointed to the door of the apartment: “The entire apartment is in the elevator, at the entrance, as well as in the underground garage, etc. There are surveillance cameras in public areas. If the murderer leaves after committing the crime, it is unlikely that he will escape the surveillance range. "
"So the murderer should actually be hiding in the building after the crime occurs."
Wang Song nodded secretly.
Qin Hui's analysis is very reasonable. Being the captain of the criminal investigation detachment means that he cannot be a loser.
It is impossible for the QZ City Public Security Bureau to put someone in this position who knows nothing.
“Furthermore, none of Wang Min’s specific connections have entered or exited the apartment that day.”
“Let’s go in first.”
There are four elevators in the building.
“This apartment has a tower structure, and four elevators can reach the floor of the deceased’s house.”
Twenty-five households with four elevators. From a structural point of view, the entire tower is surrounded by four elevators Construction.
The floor where the crime occurred is Room 708 on the seventh floor.
“There are eighteen households living on this floor. The incident occurred at 9:30 pm on the 31st. The room where the deceased lived was generally soundproof, but the house rented by Wang Min was unoccupied on both sides. ""All the people on this floor are our key targets of investigation, especially the single men in the six households, but..."
No need to say anything, Qin Hui and the others have been investigating for a week, but not a single suspect has been identified. It is known that the people on this floor are probably not suspected.
However, Qin Hui's words actually contain a lot of information.
For example, if the murderer rapes the victim, is it a sudden move or a premeditated murder?
The possibility of killing people and making noise is very high, especially when accompanied by physical strength.
Therefore, did the murderer deliberately choose Wang Min, or did he already know that no one in his neighbor's neighborhood would rent a house.
"How did the murderer enter the room?"
Wang Song asked another question.
"I don't know, but there are no signs of violent damage to the door lock. I guess he either tricked Wang Min into opening the door or used a key."
A moment later, the elevator stopped at the seventh floor, and everyone Get out of the elevator.
"The corner ahead is room 708."
At this time, Lu Chuan was not the first to step forward, because the body had been moved away long ago, and there were traces of the investigation by the Qinzhou Criminal Investigation Detachment inside.
A lot of things are actually not what they looked like immediately after the incident.
“This is where the blood flowed out.”
The door is already open, and you can see that the threshold and the ground inside the house are on the same level. This is why the blood can flow out. room reason.
A week has passed, and the blood stains in the room are no longer bright red.
Everyone present must be a criminal investigation expert, and they have actually done some research on the shape of blood stains.
Normal human blood will coagulate about three minutes after flowing out of the body.
And it changed from the bright red at the beginning to dark red.
Human blood is not a single component, but is composed of water, red blood cells, platelets and other substances.
It is the presence of these components that makes blood research a valuable clue in criminal investigation.
A week later, the blood stains at the crime scene had long solidified, and were no longer even dark red, but had turned black, even brown.
The seven members of the serious crime team put on gloves and foot covers respectively and prepared to enter the scene.
Lu Chuan, as the current surveyor, was the first to enter.
Blood stain morphological analysis is one of the most important methods for reconstructing the crime scene.
The file Qin Hui gave everyone contained a description of the reconstruction scene based on blood morphological analysis.
On the wall next to the entrance door, there were dotted blood stains, and there were blood stains remaining on the ground.
After the murderer entered the door, he hurt the victim immediately.
However, judging from the shape and amount of blood, the victim was not seriously injured at the door.
Based on the forensic report in the file, there were bruises and scars on the face of the deceased. The murderer probably hit the victim on the head with a blunt object or a fist after entering the door.
He also used sharp weapons to chop, but did not cause any damage to important parts.
Stepping through the entrance hall, there were bloodstains like this all the way, and there were more dripping bloodstains on the ground.
"The height of the blood stains is...less than one meter."
Blood stains drip from different heights. Although they will all form drop-shaped blood stains, the outer shapes of the blood drops are different.
At a distance of less than one meter, the outer surface of the falling blood droplets appeared in a jagged shape.
But at a distance of more than one meter and less than three meters, the extension of the blood droplet appears in a straight line.
When the height exceeds three meters, the lowered blood stains are no longer blood drops, but appear to be in a collapsed state.
(End of this chapter)