Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 328 Sprayed blood

The case briefing lasted 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 serious crime team have been thought of here, and they have been verified, but no useful clues have been obtained.

"What suggestions do you have next?"

"Director Li, let's go and have a look at 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, it still has high investigation value.

No matter how many photos the QZ City Criminal Investigation Detachment took, it would be better to go to the scene to 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 go to the site to do a detailed second site survey.

Theoretically speaking, it is impossible for the murderer to kill without leaving any traces at the scene.

It's just that these traces may be very hidden in some cases. Even if the murderer has cleaned up the scene deliberately, there may be fewer traces left, but there will never be none.

What Li Donglin meant was that the serious 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, make arrangements here and bring the serious crime team to the scene."

"Director Li, I brought some equipment with me when I came here, and they're all in the car. I'll drive myself."

This time Lu Chuan didn't drive his own car, but used the Detachment's [-]-year Cruiser.

The last time I came to Qinzhou to handle a case, I knew that some 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 drive it myself."

Half an hour later, Qinzhou International Apartment.

"This apartment was completed five years ago, and it can be regarded as a landmark building in Qinzhou. The monitoring facilities inside are relatively complete, but we checked it all over and found nothing suspicious."

Outside the apartment, after Wang Song got off the car, he was searching for the surveillance location of the building.

"Do you have a monitoring layout and architectural drawings of the building?"

"Yes, it's in the archives room. I'll have someone bring it over."

The property manager of the apartment was very cooperative and seemed quite experienced. After all, he had been cooperating with the QZ City Criminal Investigation Detachment for a week.

"Our judgment is that it is most likely that the people in the apartment building committed the crime."

Qin Hui pointed to the door of the apartment: "The entire apartment has surveillance cameras in public areas such as the elevator, the door, and the underground garage. If the murderer leaves after committing the crime, it is unlikely to escape the monitoring range."

"So after the incident, the murderer should actually be hiding in the building."

Wang Song nodded secretly.

Qin Hui's analysis is very reasonable. To be the captain of the criminal investigation detachment, it is naturally impossible to be a dead man.

It is also impossible for the QZ City Public Security Bureau to find someone who doesn't understand anything in this position.

"Moreover, none of Wang Min's specific relations has entered or left the apartment that day."

"Go ahead."

In the building, there are four elevators.

"The apartment is a tower structure and four elevators can reach the floor of the deceased's house."

There are 25 households with four elevators. From a structural point of view, the entire tower is built around four elevators.

The floor where the incident occurred was Room 708 on the seventh floor.

"There are 31 households living on this floor. The incident occurred at 09:30 on the evening of the [-]st. The room where the deceased lived was generally soundproof, but Wang Min rented a house with no one living on either side."

"All the people at this level are our key investigation targets, especially the single males in the six households, but..."

Needless to say, Qin Hui and the others searched for a week, but none of the suspects were identified, so they knew that the people on this floor were probably not suspected.

However, Qin Hui's words actually contained a lot of information.

For example, the murderer made the victim strong, whether it was a temporary intention or premeditated.

The possibility of killing people and making noise is very high, especially if it is accompanied by health.

So, did the murderer deliberately choose Wang Min, or did he know that the neighbors next to him were not rented?

"How did the murderer enter the room?"

Wang Song asked another question.

"I don't know, but there is no sign of violent damage to the door lock. It is guessed that Wang Min was either tricked into opening the door, or a key was used."

After a while, the elevator stopped on the seventh floor, and everyone got out of the elevator.

"The corner ahead is Room [-]."

At this time, Lu Chuan was not the first to step forward, because the body had already been moved away, and there were traces of investigation by the Qinzhou Criminal Investigation Detachment inside.

Many things are actually not what they were immediately after the incident.

"Here is where the blood flowed out at that time."

The door was already open, and it could be seen that the threshold was at the same level as the ground in the house, which was why blood could flow out of the room.

A week has passed, and the blood stains in the room are no longer bright red.

Everyone present had to be criminal investigation experts, and they had actually done some research on the shape of bloodstains.

The blood of a normal person will coagulate in about 3 minutes after flowing out of the body.

And from the bright red at the beginning, it becomes dark red.

The blood of the human body is not a single component, but composed of water, red blood cells, platelets and other substances.

It is the existence of these components that makes blood research a valuable clue in criminal investigation.

In a week, the blood at the scene of the crime had already solidified, and it was no longer dark red, but blackened, or 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 surveyor, was the first to enter.

Bloodstain morphology analysis is one of the most important means of reconstructing a crime scene.

In the dossier that Qin Hui gave to everyone, there was a reconstruction scene description based on blood morphology analysis.

On the wall next to the entrance door, there were dots of blood splatters, and there were blood splatters on the ground.

After the murderer entered the door, he hurt the victim immediately.

However, judging from the shape and amount of blood stains, the victim was not seriously injured at the door.

Combined with the forensic report in the file, the deceased had bruises and scars on his face. The murderer should have hit the victim on the head with a blunt instrument or fist after entering the door.

He also used a sharp weapon to slash, but did not cause damage to important parts.

Stepping through the porch, there were bloodstains like this all the way, and there were more dripping bloodstains on the ground.

"The height of the blood stain is less than one meter."

Bloodstains drip from different heights, and although they all form dripping bloodstains, the outer shapes of the blood droplets are different.

At a distance of about one meter or less, the extension of the falling blood droplets presents a jagged shape.

But at a distance of more than one meter and less than three meters, the extension of the blood drop showed a straight line.

And if the height exceeds three meters, the falling bloodstains are not blood drops, but collapsed.

(End of this chapter)