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

Chapter 233
The meeting continued, and everyone's discussions had their own opinions.

Ren Qiang just put forward two possibilities, but no one knows what it actually looks like.

Some people think that although there are bloodstains on the sharp knife, and the blood type is the same as that of the deceased, DNA information cannot be extracted from the traces on it, so it is impossible to use it as the basis for judging the murder weapon in the judiciary.

Therefore, there are different opinions on whether the murder weapon was a murder weapon.

After all, the idea of ​​the murderer being provocative is not very tenable. There are not many such fools in China.

Because the domestic and foreign judicial systems are different, foreign criminal cases not only pay attention to evidence, but also have such things as juries.

Evidence that can be used as evidence in China may not necessarily work abroad.

Therefore, provoking police officers is often heard abroad, but it is rare in China. If there is one occasionally, the end will not be very good.

It is too coincidental that the murderer first discarded the murder weapon, and then the body went down the river, and was found just at the place where the murderer discarded the murder weapon.

TV shows don't do that.

Current survey laboratory.

Lao Bai looked at the little thing in the bottle curiously, crawling around, which was quite interesting.

"What is this?"

Not to mention, these little things are really disgusting when they crawl out of the corpse.

But when in the bottle, one or two wriggle around alone, and it's hard to tell where it came from without talking.

"A larva of a common Diptera in life."

Lu Chuan looked at Lao Bai who was observing the larvae in the bottle at a close distance, but did not explain in plain words.

"What Diptera? Larvae?"

Liu Guodong rolled his eyes: "It's the larva of a fly."

Fly larvae?
"Where did you assemble this thing?"

Lao Bai and Yang Sen just took a look when they were helping to move the corpse by the river.

Because of the torrential rain, the smell of the corpse was covered up, and the maggots growing on the corpse did not emerge.

When they were examining the corpse in the autopsy room, Yang Sen and Lao Bai were examining sharp knives, so of course they didn't know where these things came from.

"Of course it's on the corpse, Lu Chuan used it for experiments."

On the corpse?
Lao Bai's complexion suddenly turned bad.

What Lu Chuan chose were vigorous, white and fat larvae, which seemed to have nothing to do with the corpse.

"It's not kind..."

Underestimating, Lao Bai left feeling a little depressed.

Liu Guodong smiled wryly and shook his head. He refused to let him come down just now and insisted on following.

If Yang Sen didn't come down, of course he didn't have to be disgusted with himself.

"Xiao Lu, next you come to do the cultivation experiment, if you need our help, I'll come down later."

Liu Guodong obviously didn't want to take it with him.

He is a current surveyor, and he doesn't have a forensic doctor who is about to become a girlfriend, and he doesn't receive two salaries. The job of a forensic doctor...let's forget it.

The criminal police of the criminal investigation detachment are also human beings.

Solving crimes is actually a job, but it is much more exciting than ordinary jobs.

It's also harder and more dangerous.

But once there is a choice, who doesn't want to live a stable life, and the things of moving forward with heavy burdens... are not easy to do.

Lu Chuan was the only one left in the laboratory.

The time of death of the deceased can be determined through the analysis of parasitic eggs on the corpse, not just by looking at the length of the insects.

The first thing Lu Chuan has to do is to determine the type of larvae.

There are many types of flies, and there are many flies that like to parasitize on corpses.

Generally the most common are houseflies, blowflies, fruit flies, Lucilia sericata, etc.

Different species of fly larvae have this subtle difference, and the incubation cycle and optimal incubation conditions are also slightly different.

But these differences are not big, and Lu Chuan is making distinctions.

First of all, blowflies can be excluded. There are some small branches of this kind of flies, such as the most common mung bean fly, which is a kind of blowfly.

This kind of fly likes to eat human and animal excrement, but does not like to breed on carrion.

Moreover, the larvae of blowflies are darker in color and generally appear gray, which is quite different from the white larvae collected from corpses.

The larvae of the housefly, fruit fly, or Lucilia sericata, while similar in appearance, have subtly different responses to the stress of certain foods.

After several experiments, Lu Chuan was basically sure that the parasitic fly on the corpse was a scorpion fly.

Compared with housefly and Lucila sericata, hemp fly prefers to live in outdoor natural environment.

In most cases, if the corpse is killed indoors and then decays, the parasitic flies are mainly houseflies and Lucilia sericata.

But if it is killed outdoors and begins to rot, the parasitic flies are mostly hemp flies.

Of course, this is only an approximate situation, and some special cases are not included.

After determining the type of parasite, it is to simulate the external environment of the corpse, and then cultivate the corpse fly larvae.

This is not something that can be drawn in a day or two.

Lu Chuan needs to cultivate the existing larvae and compare the growth rates of larvae of different sizes before simulating the temperature and humidity of the external environment of the corpse.

These two factors are the most critical elements in determining the growth rate of larvae.

Only by mastering this, can we compare the parasitic time of the flies on the corpse with the growth cycle of the flies under standard conditions, so as to determine the time of death.

"Ding!"

"Basic task: complete a forensic insect experiment by cultivating the parasitic maggots on the corrupt corpse, and determine the time of death of the corpse."

basic task?

Lu Chuan, who was cleaning the petri dish, was slightly taken aback.

It's been a long time since you received the basic task of system release, right?

When Lu Chuan first got the system, he had been exposed to the basic tasks released by the system many times.

Compared with the advanced missions, the basic missions are relatively simple, mainly for the further proficiency of acquired skills.

But there is no corresponding reward after completion.

Thinking of the mission, what happened to the case of Lu Yao's fraud?

It is heard in QZ City that the man who cheated Sun Yuting has been caught.

In this case, it is estimated that the 1000 million cheated by Lu Yao may still be returned in full.

Shaking his head, Lu Chuan continued to work.

Economic investigations are different from criminal investigations.

Criminal investigation and solving a case is more like hide-and-seek, 90.00% of the case is solved if the murderer is found.

But economic investigation is different. Economic investigation pays more attention to the process of solving a case, the flow of funds, and locking up evidence is often much more difficult than criminal investigation.

For example, some common fraud cases are often caught by people, but the stolen money cannot be recovered.

Either the suspect was hiding on purpose, or he was really defeated.

But no matter which one, it is very difficult for the victim to get back the money defrauded, or it is difficult to get back the full amount.

QZ City Economic Investigation Detachment, Wang Haiyi has been very busy these two days.

In Sun Yuting's case, a lot of exciting inside stories have been dug out.

Like Sun Yuting, more than one person was cheated, and the amount she was cheated was not the largest.

The suspects did not commit the crime alone, there was an extremely tight gang behind them!

(End of this chapter)