"That's it." Chai Ningning clapped his hands and said, "It's just a suitcase, and there aren't many places to survey." It's a pity that you directly ruled out the suspicion of that young man, otherwise you can go to his house again to take a look.

Well, if it's okay, we'll close the team first, and I'll take the suitcase back first, and we'll see if we can find any new clues.

Oh yes, the most important thing I almost forgot to say, in the suitcase, a few hairs were found, through the color, length and diameter of a simple visual inspection, not the three deceased, it is likely that the perpetrator left, I will go back and hand it over to the forensic genetics laboratory to see if the DNA can be extracted.

If you can, when you lock the suspect, when you lock the suspect, then this is very favorable and ironclad. Even if you are lucky, you can directly lock the perpetrator through fingerprints, and then determine the facts of the crime through DNA, and the case will be closed directly. ”

Brother Song nodded, his expression was much more relaxed: "It seems that although this case is big, it should not be difficult to solve, and the murderer's methods are quite rough." ”

"Well, that's right." Chai Ningning said: "Then, the work of reasoning and investigation will be handed over to you, I will go back first, and call me at any time if I have something." ”

"Okay."

As soon as Chai Ningning left with the trace inspectors, Song Ge and other investigators received photos from the technical team.

At first glance, although the photo has undergone technical corrections, the facial features of the deceased are distorted to a certain extent because of the negative impact of the face being too bloody and terrifying, but it is still more than eighty percent similar to the three heads.

Sight and memory are quite subjective things in themselves, and the brain will also correct this information in real time, and I think that with these photos, if someone knew the deceased, they would definitely be able to recognize it.

Brother Song assigned tasks to everyone, and then visited them door to door. Come to think of it, the deceased should also be a resident of this community.

"That, Brother Song, the efficiency of door-to-door is a bit low, isn't it? After all, it is the rush hour for work, and many people are either already out or ready to go out. Qi Yuan said suddenly.

"It's a problem, but it can't be helped." Brother Song nodded, and then asked, "What, you have an idea?" ”

"It's better to send some people to squat at the entrances and exits of the community," Qi Yuan said: "Come and ask one by one, it should be more efficient." ”

"Great idea!" Brother Song nodded again and again, immediately picked up the walkie-talkie, and temporarily changed the previous order.

The number of criminal police in their group is not large, there are only seven people, and there are only eight if you count Qi Yuan, but fortunately, there are only three gates in this community, and after arranging two people at each gate, Brother Song and Qi Yuan can still be vacant.

"The two of us, are you going to visit the unit building where the reporter is doing?" Qi Yuan saw that Brother Song did not go in the direction of the community gate, but walked to the unit building that the young man pointed to just now, so he asked.

Brother Song nodded: "The suitcase was replaced at the door of the unit building, so the perpetrator, or the scene of the crime, should also be in that unit building, so it is possible to make mistakes and make mistakes." And the scene of the crime is likely to be the deceased's home, and the deceased may be a resident of this building, so we should be able to gain from our visit. ”

"But how could you be mistaken?" Qi Yuan asked a new question: "The suitcase containing the corpse, the perpetrator should carry it all the way, right?" And how can you be mistaken? ”

"Indeed, I can't figure this out for the time being." Brother Song nodded, thought for a moment, and guessed: "Perhaps, there is more than one suitcase?" ”

"Huh?"

"This suitcase is quite heavy, and although there is an elevator in the unit building, it can only be towed two at a time. And if the murderer put all the body parts in the suitcase, the three corpses would need at least three or four suitcases to fit.

In doing so, he made two, or more, trips to move the suitcases. Naturally, there is a possibility of confusion, mistakenly taking the informant's box and leaving his own box containing body parts at the scene.

According to this line of thinking, it is speculated that the murderer should have a car, so that in a short period of time, he could transfer the suitcase from the elevator to the door of the unit building in turns, and then transfer it from the door of the building to another place. ”

Qi Yuan was still a little puzzled: "In that case, why don't you just go in a few trips?" Take the two boxes downstairs and load them in the car, and then go back and get the ......."

"How could the murderer think so comprehensively. Besides, the door of the unit building is in the middle of the elevator hall and his car, and if you use the door as a 'transfer station', you can see your box throughout the whole process, which is actually quite safe.

Perhaps when he found that there was a suitcase at the door of the building, and the box was still exactly the same as his, he also had concerns, worried about confusion, and considered whether to load the suitcase directly into the car.

But in this way, the suitcase in the elevator room will not be visible, which will make him very unsteady, so after hesitating, he should still put the suitcase at the door, just pay more attention.

It's just that he overestimated his spatial memory and resolution, and finally confused the box.

And there was not much time left for him at that time, God knows when the owner of the suitcase will come back, and when the time comes, he can't tell which box is his own, so he will inevitably open the box and check, and he will be exposed as soon as he opens the box, so he has to hurry up and load the suitcase according to his memory.

This time should be very short, a total of no more than two minutes, although the suitcase does not have universal wheels, just an ordinary double directional wheel structure, but to pull is not difficult, plus the distance is actually short, hands and feet faster two minutes can be done.

And listening to the young man's description, although he didn't leave for a long time, there should still be three or five minutes, and if the murderer can complete all this in two minutes, he can indeed be directly staggered with him. ”

Qi Yuan nodded knowingly.

Saying that, the two of them walked to the door of the unit building, and took a closer look, it was really similar to what Brother Song said, the elevator room was only seven or eight meters away from the entrance of the building, and the parking space from the door of the building to the outside was only more than ten meters.

"The murderer must have lived in this building, right?" Qi Yuan looked up and said, "He should have thrown his body away at this time, and maybe he will come back later." The plainclothes we all wear may be able to block up. ”

"Hanging." Brother Song shook his head: "Three heads were found in the suitcase as a result of sending the courier, such a bizarre and topical thing has long been rumored, and the murderer can hear about it as soon as he comes back, even if we are wearing civilian clothes, he should be able to guess that the suitcase is still wrong after all, and there is a business trip." ”

"Then he won't necessarily run away, right?" Qi Yuan said: "What if he is still quite confident in his arrangement? Or if you are not willing to die like this, you may choose to go home first, and then decide whether to run or stay. ”

"Hopefully, just ask first."