On the projector, eight photos are arranged in two rows of four photos each.

"This is a photo of the scene taken by the current survey." Each photo is marked with a serial number, from left to right, from number 1 to 8.

Ren Qiang got up and walked to the side of the projector and pointed to the photo marked No. 1: "The bag containing the broken corpse has clear traces of rolling off. "The photos at the scene were all taken by Lu Chuan.

In addition to the black plastic bag, there are also directional markings on the photo where the bag rolled off.

"The bag has traces of rolling off the ground in a direction from east to west."

"Let's look at the second photo, which is also a tumbling mark from east to west."

"And all the bags are spaced more evenly apart, almost every two hundred meters." Eight plastic bags, one every two hundred meters, tumble from east to west.

That's all the information that the survey photos show. Everyone waited with bated breath for Ren Qiang to continue his analysis.

"From this information, it can be determined that the direction in which the murderer traveled in the folk street was from east to west."

"Moreover, the other party is throwing the body by a vehicle such as a car." Vehicle? Zhang Hui raised his hand: "Ren Group, why is it a vehicle such as a car?" ”

"Although there are a lot of eight body fragmentation bags, there are not many body parts in each bag, and an adult can carry them."

"Or maybe the other party is riding a motorcycle, right?" Zhang Hui's question was very reasonable, and many criminal policemen nodded secretly.

Eight plastic bags of broken bodies, forensic and insecticides, have been identified. The weight is really not large, and an adult can carry it completely.

Ren Qiang judged that the murderer was riding a car or other means of transportation, is there any specific reason? You must know that the vehicle used by the murderer or the means of transportation used by the murderer is very important to throw the body after dismembering the body.

It is an important aspect of the next investigation and analysis of the criminal police. If this is wrong, then the detection of the case is the opposite direction.

The murderer was obviously on foot, but the direction of solving the case was locked in the car, in that case, there was no need to talk about solving the case.

Ren Qiang's right hand was weakly clenched: "First, the analysis of the traces from the plastic bag can basically rule out the possibility of the murderer walking. Zooming in on one of the photos, Ren Qiang continued: "This is the first photo of a plastic bag taken by Lu Chuan using the center photography method. ”

"Everyone looks at the traces of the plastic bag rolling off, the scratches on the ground are obvious, and the plastic bag has rolled several times."

"And here," Ren Qiang pointed to a broken ice ballast on the wall of the plastic bag: "This broken ice ballast is directly above the black plastic bag, and the ice ballast in other places is intact, only here is broken, it should be smashed by the body bag." ”

"If the murderer threw the body on foot, there is a high probability that the body bag will not have many traces of rolling off, and it will be difficult to break the ice ballast on the wall." Ren Qiang said as he picked up the garbage bag in the corner of the conference room, packed it and threw it out.

Sure enough, the bag stopped quietly in the distance, with no traces of tumbling. Ren Qiang picked up the bag and threw it out with great force: "The murderer threw the corpse, it is unlikely that he would use such a strong force." The bag tumbled out, simulating the murderer's body dumping.

"Then why is it a car, the murderer may also be riding a motorcycle." Ren Qiang nodded with you: "Eight bags, except for the meat sandwich bun......" Ren Qiang glanced at Wang Shuai, who was pale.

This kid ...... It's a bit miserable.

"Except for the bags outside the meat sandwich shop, we didn't take first-hand photos of the corpses, and the other bags were about 200 meters apart."

"At this distance, how likely is it that the murderer deliberately created it?" Every two hundred meters, throw a bag, deliberately?

Most people shake their heads, and it's unlikely.

"So, I think the other party may be sitting in the car, intermittently throwing away the body bag."

"If the other party is riding a motorcycle...... Operationally unrealistic. Qin Yong nodded, Ren Qiang's analysis made some sense: "What about monitoring, how is the monitoring checked?" "Zhang Hui is responsible for monitoring and accessing.

"There are two surveillance cameras on the Folk Street, on both sides of the street, and we have marked all the vehicles and pedestrians who entered and exited the Folk Street yesterday, and are now preparing for investigation." In the detection of homicides, all the mechanisms are very complete and the processes are also complete.

Each group of people, how to divide the labor, is planned in advance, even if someone is on temporary leave, or because other cases cannot participate, there are also AB posts for supplementary transfers.

After the case was discovered, the investigation and visits of the inquest, forensic doctors and other criminal police officers were all carried out together. In fact, although this case has a bad impact, it is not complicated from the perspective of detection.

When the corpse is dumped on the street, there are cameras on both sides of the street, even if all the people who enter and leave the folk street are checked, the murderer can be found.

And for now, it is obviously easier to find the murderer.

"Focus on checking all the vehicles that entered and exited the Folk Street last night, especially in the second half of the night!" Work tasks are deployed quickly, and relevant vehicle information is quickly locked.

There were a total of fifty-one cars and more than 100 criminal policemen, who set off as soon as possible. Survey Office. When the front-line criminal police attacked, Lu Chuan was not idle in the rear.

The corpse mutilation case is relatively unfriendly to the current investigation. Because all the fragments of the corpse must be photographed one by one for archiving.

Obviously, there is no way to complete this work at the scene where the body parts were found, and it can only be done back. Fortunately, Shen Yan also needs to examine the corpse, and the two of them are matched, and they don't feel tired when they are busy.

Click! After taking a photo of a corpse again, Lu Chuan straightened his waist, looked at the work that had been completed two-thirds of the way, and breathed a sigh of relief.

"The height of your dissecting table is not appropriate, and you are always bent over to work, tired and panicked." Shen Yan was marking and inspecting the corpse parts: "That's because you are too tall, and the height of the dissecting table is regulated. Lu Chuan smiled and continued to work.

After taking a piece of corpse similar to a waist and abdomen, Lu Chuan was about to take a picture, but suddenly stopped.

"What's wrong?"

"This ...... Vestige...... Something doesn't seem right. Lu Chuan carefully placed the body on the dissection table, and under the bright light, it was a speckled stain.

The marks are brown with regular edges, like a small circle.

"Traces?" Shen Yan looked at the traces, as a forensic doctor, Shen Yan's professionalism was beyond doubt: "Yes...... Bloodstain? "The changes of human blood in different times and in different environments after human death are quite different.

Especially in the eyes of professionals, the size, color, and shape of the edges of these marks have special significance.

"Could it be that the corpse was rubbed against other corpses?" Lu Chuan pondered for a moment and shook his head slightly: "This is a drop-shaped bloodstain, I haven't seen it on other corpses." "The body was refrigerated at low temperature for a short time, so the blood in the body clotted, and there was no trace of blood after the murderer threw the body.

However, as time passed, the corpse pieces thawed, and many of the corpse pieces rubbed against each other stained with friction-shaped bloodstains.

But what Lu Chuan found now was dripping blood. In the morphology analysis of blood stains, dripping blood stains can be used to determine many static field indicators.