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

Chapter 237 Lu Chuan's Conclusion

Current survey laboratory.

Shen Yan is visiting the fruits of Lu Chuan's labor in the last six days.

"Is this what you cultivated?"

In the current survey laboratory, more than [-] petri dishes have been placed on the table.

Some seem to be empty inside, with nothing in them.

Some are filled with flying flies, while others are crawling with the larvae of the flies.

Lu Chuan nodded: "There is still one experiment that has not been completed, and the results should be available tomorrow morning."

"only……"

"what happened?"

Although Shen Yan is a forensic doctor, she has also studied the basic theory of forensic entomology.

However, this is the first time I have seen the larvae of sargassum flies raised in petri dishes like Lu Chuan.

Lu Chuan shook his head: "Through the cultivation of the larvae of the hemp fly, we can more accurately judge the time of the first batch of hemp fly parasitic on the corpse."

"However, judging from the current results, some are not in line with common sense. These eggs seem to have hatched for too long, as if..."

Lu Chuan opened one of the petri dishes, and inside was a pupa, which was a larva about to hatch.

"It looks like it's been refrigerated for a while!"

Lu Chuan discovered a strange phenomenon when he was cultivating hemp larvae.

The intergenerational relationship of these larvae is very simple, they are all one generation of larvae.

That is to say, the hemp fly larvae parasitized on the corpse did not hatch and then lay eggs.

Herein lies a problem.

Lu Chuan collected the DNA information of the collected larvae.

Some of the larvae of the flies were found to have homologous DNA, that is, eggs laid by the same fly.

But the development of these flies is not the same, some grow big, some grow small.

This is not a common occurrence in cadaveric parasites.

Unless it is under airtight conditions, the body will be found by flies within ten minutes after death.

In other words, the time for the flies to lay eggs and the time for the dead bodies to die can be considered almost equal.

This is an important reason why forensic entomology exists.

However, the growth and development of the homologous larvae found in this corpse are very different.

The first batch that Lu Chuan bred had pupated two days ago and turned into hemp flies.

But the small larva is just over one centimeter now, and there is still about a week before it will pupate.

Lu Chuan is now waiting for an intermediate result so that the exact time can be determined.

It is just a few larvae that are pupating, and a lot of important information can be calculated through the time they pupate.

Shen Yan doesn't know much about this aspect, she only has some basic theoretical knowledge.

"I heard from my master that the team leader Ren Qiang and Sun Jun are not going well?"

Lu Chuan nodded, he also heard about it.

"Brother Hui, they found the first scene where the murderer dumped the body early the next morning after the incident, and I went to do the on-site investigation."

"But there are very few traces left at the scene. The heavy rain washed away everything, but it was found that the body should have traces of being dragged, and a shoe was left at the scene."

"Some of the hairs we collected were also confirmed to belong to the deceased, and there were no major discoveries for others."

"Team leader Sun Jun also conducted a detailed investigation based on the fact that the size of the clothes worn by the deceased did not match his figure you found."

"They are now holding a case analysis meeting and should be reporting the situation."

"However, in the morning, I heard from Group Leader Sun that the situation is not optimistic."

Lu Chuan and Shen Yan came early in the morning.

On the way to the office, I ran into Sun Jun and chatted for a while, but didn't ask any specific details.

It is only known that the search for the expensive underwear on the body has encountered difficulties.

meeting room.

"Can you contact the headquarters of this underwear company and check the information of consumers who buy this underwear across the country?"

Now that Haizhou City has confirmed that there is no problem with people buying this type and size of bras, it will start from the whole country.

Since only thirteen pieces were sold in the entire Haizhou City, it is estimated that there will not be a particularly large amount in the whole country.

Moreover, this luxury store does not have sales outlets in all cities.

It shouldn't be too difficult to find out.

"I'll try. The headquarters of this company is not in Haizhou. I'll contact the criminal investigation team over there to see if I can help."

Sun Jun actually thought about this method, but he was not sure if it would work.

But whether it can be found or not is hard to say now, after all, the sale of this underwear is not a real-name system.

The reason why the Haizhou Criminal Investigation Detachment conducted such a thorough investigation is because this territory is Haizhou.

But even so, it took a week to figure it out.

And if this scope is enlarged to the whole country...

Sun Jun has no confidence at all.

They have had similar experiences before, but they have not succeeded without exception.

Qin Yong actually knew about this situation.

He came from the front line, and the cases he handled also encountered similar situations where the scope of investigation had to be expanded.

But there are very few successes, but you can't stop checking because of the low success rate.

Among all the clues now, this clue is the most obvious, so I can only chase after it.

Of course, the investigation by Sun Jun and others cannot determine who the murderer is based on just a bra.

After all, even if all the people who bought this D-cup bra were found, it would not be possible to say whoever lost their bra was the culprit.

Otherwise, Sun Jun didn't have to bring more than twenty people to investigate in Haizhou for a week.

The meeting ends soon.

Surveying the office now.

"Well, what's the progress?"

Lao Bai handed Liu Guodong a cup of hot tea and asked about the case analysis meeting just now.

Liu Guodong shook his head.

"Ren Qiang has checked all the surrounding villages. There are no missing persons, and there are few witnesses. The place where the murderer dumped the body is too remote, and there are no fishing people."

Lao Bai still has some experience with this.

A place where no fisherman goes, it can definitely be called a deserted place.

"What about Sun Jun?"

"There are no results. The thirteen people in Haizhou who bought that D-cup bra all investigated and found nothing."

"Old Qin is going to attack the whole country to see if he can find clues about bras."

the whole country?

Lao Bai shook his head when he heard it.

After so many years, the nationwide investigation is just a talk.

A human life will not use the resources of the whole country.

Also, that bra has been inspected here.

There is no specific substance on it, and no hair or anything is found.

Some scraps of skin also belonged to the deceased.

"If you want me to say that you have to start from the surrounding area, the murderer can't throw the body silently. Although it's farther away, it's not true that there is no one there?"

Yang Sen thinks it is better to start from the scene.

"It's not that you haven't been to the scene. There is no one living around. Ren Qiang and the others have been checking for almost a week, and there is nothing there?"

(End of this chapter)