The meeting continued, and everyone had their own opinions.
Ren Qiang only proposed two possibilities. No one knows what they actually look like.
Some people think that although there are blood stains on the sharp knife, and the blood type is the same as that of the deceased, because DNA information cannot be extracted from the traces, it cannot be used as a basis for the determination of the murder weapon in the judiciary.
Therefore, there are different opinions on whether the murder weapon is a murder weapon or not.
After all, the theory of provocation by the murderer is not very tenable. There are not many such fools in the country.
Because the domestic and foreign judicial systems are different, foreign criminal cases not only attach importance to evidence but also have the existence of juries in the judgment of criminal cases.
Evidence that can be used as evidence in China may not be used abroad.
Therefore, provocative police officers are often heard abroad, but very rare in China. If there is one occasionally, the end will not be too good.
It would be too much of a coincidence that the murderer abandoned the murder weapon first, and then the body drifted down the river and was found exactly where the murderer discarded the murder weapon.
TV dramas don’t act like this.
Existing exploration laboratory.
Lao Bai looked at the little thing in the bottle with curiosity, crawling around here and there, which was quite interesting.
"What is this?"
Not to mention, these little things are really disgusting when they crawl out and out of corpses.
But when it's in the bottle, one or two of them squirm around, and without talking about it, it's hard to tell where they got it.
"The larvae of a common dipteran insect in life."
Lu Chuan looked at Lao Bai, who was observing the larvae in the bottle at close range, but did not explain in easy-to-understand terms.
"What Diptera? Larvae?"
Liu Guodong rolled his eyes: "It's just the larvae of flies."
Fly larvae?
"Where did you make this thing?"
Lao Bai and Yang Sen just took a look while helping to move the corpse by the river.
Because of the heavy rain, the smell of corpses was covered up, and the maggots breeding on the corpses did not emerge.
When they were examining the corpse in the autopsy room, Yang Sen and Lao Bai were testing 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 face suddenly turned bad.
The larvae that Lu Chuan selected were vigorous, white and fat, and their appearance seemed to have nothing to do with corpses.
"Unkind..."
After underestimating, Lao Bai left a little depressed.
Liu Guodong smiled bitterly and shook his head. He refused to let him come down just now and insisted on following him.
Yang Sen didn't come down, so he certainly didn't have to feel bad about himself.
"Xiao Lu, you are going to do the cultivation test next. If you need any help from us, I'll come down."
Liu Guodong obviously didn't want to take him with him.
He was a current investigator, and he didn't have a forensic doctor who was about to become his girlfriend, and he didn't receive two salaries, so he had to forget about the job of a forensic doctor.
The criminal police officers in 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 you have a choice, who doesn't want to live a stable life and move forward with a heavy burden... It's not easy to do.
Lu Chuan was the only one left in the laboratory.
Determining the time of death of the deceased by analyzing the parasite eggs on the corpse cannot be determined by just looking at the length of the worms.
The first thing Lu Chuan had to do was determine the type of larvae.
There are many types of flies, and there are many flies that like to live on corpses.
Generally the most common ones are house flies, blow flies, fruit flies, green flies, etc.
Different species of fly larvae have subtle differences, and the hatching cycles and optimal hatching conditions are also slightly different.
But these differences are not big, Lu Chuan is making a distinction.
First of all, you can exclude blowflies. This kind of fly also has some small branches. For example, the most common mung bean fly is a type of blowfly.
This 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 obviously different from the white larvae collected from corpses.
Although similar in appearance, the larvae of house flies, fruit flies, or green flies have slightly different stress responses to certain foods.
After several experiments, Lu Chuan was basically able to determine that the parasitic fly on the corpse was the Sarcoid fly.
Compared with house flies and green flies, lineflies prefer to live in outdoor natural environments.
In most cases, if the body is killed indoors and then becomes decomposed, the parasitic flies are mainly house flies and green flies.
But if it is killed outdoors and begins to decay, the parasitic flies are mostly linens.
Of course, this is only a rough estimate, and some special circumstances are not included.
After determining the type of parasite, the external environment of the corpse is simulated, and then the corpse fly larvae are cultivated.
This cannot be concluded in a day or two.
Lu Chuan needed to cultivate existing larvae and compare the growth rates of larvae of different sizes before simulating the external environmental temperature and humidity of the corpse.
These two factors are the most critical factors that determine the growth rate of larvae.
Only by mastering this can we compare the parasitism time of the linens on the corpse based on the growth cycle of the linens under standard conditions, thereby determining the time of death.
"Ding!"
"Basic mission: Complete a forensic insect experiment by cultivating parasitic maggots on decaying corpses to determine the time of death of the corpse."
Basic tasks?
Lu Chuan, who was cleaning the petri dish, was slightly startled.
It’s been a long time since you received a basic mission from the system, right?
When Lu Chuan first got the system, he had been exposed to many basic tasks released by the system.
Compared with basic tasks and advanced tasks, the task content is relatively simple, mainly for further proficiency in acquiring skills.
But there is no corresponding reward after completion.
Thinking of the mission, what happened to the Lu Yao fraud case?
I heard in QZ City that the man who defrauded Sun Yuting has been caught.
In this case, it is estimated that the 10 million that Lu Yao was defrauded may still be fully returned.
Shaking his head, Lu Chuan continued working.
Economic investigation cases are different from criminal investigations.
Criminal investigation is more like hide-and-seek. Ninety percent of the cases are solved if the murderer is found.
But economic investigation is different. Economic investigation pays more attention to the process of solving the case and the flow of funds. It is often more difficult to lock down the evidence than criminal investigation.
For example, in some common fraud cases, people are often caught, but the stolen money cannot be recovered.
Either the suspect deliberately hid it, or he was really exposed.
But no matter which type, it is difficult for the victim to get back the money that was defrauded, or to get it back in full.
QZ City Economic Investigation Detachment, Wang Haiyi has been very busy these two days.
Sun Yuting's case has revealed a lot of exciting inside stories.
Like Sun Yuting, more than one person has been deceived, and the amount of money she was defrauded was not the largest. Read the book
The suspect did not commit the crime alone, there was a gang with an extremely tight network behind them!
