After entering the unit door, Lu Chuan did not enter the elevator, but followed the stairs to the stairwell between the first and second floors.
From the surveillance situation I just checked outside the door, there is a rainproof barrier on the unit door, facing the window of the walking stairwell.
If the theft suspect did not come out from the unit door after completing the theft, is it possible to climb out from the ventilation window in the stairwell between the 1st and 2nd floors? In this way, it is possible to escape and open the unit door. monitor.
"We have also checked here. The windows can be opened from the inside and people can pass through, but there are no traces of stepping on them. It is very clean."
Yuan Shaokang saw Lu Chuan going upstairs. , you know what the other person wants to see.
The people in the High-tech Zone Criminal Police Brigade are not idlers either. After receiving the report, they basically checked every aspect they could think of.
Lu Chuan put on his gloves and checked the window himself. There was indeed no trace of stepping on it. There was a layer of dust floating on it, and there was no trace of any human movement.
Yuan Shaokang then introduced: "The owner lives on the 8th floor. We checked all the windows going down from the 8th floor, but we didn't find any clues."
"There are also floors above "The roof of this building is 11 stories high. You can reach the roof directly from the 11th floor."
"But if you want to go upstairs, you have to pass by the homes on the top floor. There are always people in the two homes on the top floor. It is impossible for the suspect to leave silently from the top floor to other units.”
"We checked all the exits in the entire building, but found nothing."
This is interesting.
“Let’s go to the scene first and take a look.”
In fact, according to what is discovered now, since it is impossible for the other party to come out of the building without leaving a trace, does that mean that the suspect has Maybe live in this unit?
Pausing this doubt, Lu Chuan, Zhang Hui, and Yuan Shaokang took the elevator to the eighth floor.
"There are no signs of violent prying of the door lock."
Lu Chuan took out a magnifying glass and a strong flashlight from his survey bag.
There was indeed no trace of violent opening on the surface of the lock, but under the illumination of a magnifying glass and a strong flashlight, Lu Chuan still discovered something interesting.
"High-strength gel."
There was a layer of bright reflection on the keyhole, and Yuan Shaokang also saw it at this moment.
"What is high-strength gel?"
He has never heard of this thing.
Lu Chuan didn't know it before, but the intermediate spot survey skill card contains the method of using and discovering this special material.
“Just understand it as another kind of glue that is particularly hard after drying.”
“The suspect did not use violence to open the lock. He should have used a needle to open the lock. High-strength gel is injected into the keyhole, and then the glue is allowed to dry and harden, becoming a key.”
Lu Chuan did not explain the other things in detail. This gel is not sold in batches and is all prepared by oneself.
How did the other party master this formula?
According to the information Lu Chuan learned, this kind of thing is generally only used by magicians when performing.
Because this gel is transparent, it cannot be seen clearly from a distance.
Entering the room, Lu Chuan knew why the owner immediately reported the crime.
Some burglary cases are actually not very difficult to detect. The main reason is that the time when the owner discovers the theft is very late in most cases.
If something is lost, you will only know it is missing when you find it is gone when you use it.
Normal people would not check to see if the cash is still under the bedside as soon as they get home.
But this family was different. The whole room was turned into a mess.
Clothes were scattered everywhere, the books in the bookcase were basically upside down on the floor, and even the bed was turned over. "This is really a thief."
Since joining the police, Lu Chuan has seen many murder scenes, including disgusting and terrifying ones.
But this is the first time I have seen such a messy theft scene.
"The other party didn't leave any traces at all?"
Yuan Shaokang nodded: "Not at all, nothing was found."
"We only collected the footprints and fingerprints of the owner, his wife, and their children in the room."
"And we also ruled out the possibility of theft."
This kind of thing has not happened before. .
Yuan Shaokang had received such a report before. The owner said that money was lost at home, but it turned out that he had stolen it.
The reason is also very simple. The daughter-in-law manages the money too tightly, and the husband has no choice but to steal the family's money and call the police.
"The man was on a business trip out of town and didn't come back for a week. We have verified that he has tickets and everything. The man's employer has verified that there is no problem."
"The woman has been living in her parents' home. He has never been back.”
“Captain Yuan, let me take a look first.”
Since the possibility of theft has been ruled out, it must be an outsider who committed the crime.
Since the suspect has been in and out of this house, he will definitely leave traces, but the other party must have taken some measures to reduce these traces to a minimum.
The fact that the people from the High-tech Zone Criminal Police Brigade didn't notice it didn't mean that Lu Chuan wouldn't find it either.
The ground is Lu Chuan’s focus.
Theft is a case that is repeatedly banned. It seems that no matter what the social and economic development is, theft will always exist.
Moreover, theft methods are becoming more and more sophisticated.
Obviously, there are almost no cases of fingerprints being left at the scene of theft.
Almost all the stupid thieves have been caught, and the rest are relatively smart.
Know that wearing gloves when committing a crime will not leave fingerprints, and the probability of being caught is always smaller.
But it is impossible for any crime scene not to leave footprints.
There is no way the suspect could have come floating in.
There are some people who are thoughtful and will clean up their footprints when leaving, but this house is different. The other party did not clean the ground at the scene, but the people from the High-tech Zone Criminal Police Brigade did not collect the suspect's footprints. , which is strange.
Since it was not a self-inflicted theft, and the suspect had not left any footprints, how did the other party enter the scene? How did you leave the scene?
In the room, the High-tech Zone Criminal Police Brigade has laid out transparent footboards, and the scene is well protected.
Lu Chuan lay on the ground and observed carefully.
The floor of the crime scene is made of marble tiles. If you look directly at it, you can't see anything. But if you look slightly towards the light, you can find many footprints on the side.
The footprints are messy, but there are basically only three types, which should be those of the owner, his wife and children.
There are traces of covering and superimposition on the footprints, and the covered footprints can be clearly identified.
In many cases, in order to cover up their footprints, suspects will deliberately wear large, flat shoes without patterns. In this case, the footprints left at the scene will be a large pressure plane, making it difficult to was discovered.
But here...(End of Chapter)