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

At the same time, the current survey office.

Lu Chuan had completed the collection of trace evidence from the corpse in the early morning and was now doing the final analysis in the laboratory.

This time, Old Bai Yangsen did not help, but asked Yang Lin to help Lu Chuan.

The instruments used for trace evidence analysis are different from those used for daily investigation.

Even the solvents used to identify certain substances are different from what Yang Lin learned in school.

The biggest difference between the identification of trace physical evidence and the identification of ordinary physical evidence lies in the timeliness and frequency.

Since the weight of trace evidence itself is measured in grams or even milligrams.

Therefore, the identification and analysis of physical evidence must be extremely careful and meticulous.

Judicially speaking, not all physical evidence can be used for testing, but some must be retained as evidence.

In this case, in most cases, analysis of trace physical evidence cannot be used as judicial evidence.

But just because it cannot be used as judicial evidence does not mean it is useless.

The results of identification and analysis of trace evidence can provide ideas and clues for solving crimes.

Naturally, Yang Lin had never been exposed to such precision instruments when he was at the police station before, so this was a very rare learning opportunity.

Compared with Lao Bai, Yang Sen, Liu Guodong and others, Yang Lin's foundation is very solid. After systematic scientific training, he is much better than the others who came from a wild background.

What Yang Lin lacks now is the accumulation of experience.

Therefore, following Lu Chuan to learn trace evidence analysis this time was very helpful to Yang Lin's growth.

In fact, Yang Lin's growth state is the normal growth process of a current detective.

Follow the seniors and masters to the scene, a little bit of accumulation, a little bit of learning, and a little bit of familiarity.

Like forensic doctors, all detectives and criminal investigation detectives are fed by cases.

As long as you experience more cases, experience more things, and experience more murderers, your experience will naturally accumulate.

Just like some criminal investigation experts in the provincial department, except for some psychological profilers, some criminal sketchers and other minor professions that have just emerged in recent years, none of them are experienced criminal investigators in their forties, fifties or even fifties and sixties.

As for Lu Chuan...

Damn it, don't worry about it.

In fact, not many clues were found on Zhang Cuicui's body.

Lu Chuan's collection of trace evidence only found some plant-like barbs on the ankles of the deceased's body.

There are also some red attachments.

Other than that, there's nothing special.

After testing, it was found that the plant barbs on Zhang Cuicui's ankles were the sharp thorns on the fruit of fire ginseng fruit.

This kind of fire ginseng fruit is about the same size as a dragon fruit, but its outer color is yellow and its inner flesh is green, similar to cucumber pulp.

"Lao Lu, I checked on the Internet and found that there are not many sales of this kind of fire ginseng fruit in our Haizhou City, and the price is very expensive."

Lu Chuan nodded.

Fire ginseng fruit, sold by the piece, can remove fire.

Under normal circumstances, you need to add some honey when eating this stuff.

When Lu Chuanshang was hospitalized for two days, his mother bought him a lot.

Not only did Lu Chuan not like the taste of the pulp, most of the fire ginseng fruits were destroyed by Zhang Hui.

"Zhang Cuicui is in the fruit business, and she usually comes into contact with this kind of fruit. But when she touched the fruit on her ankle, I took a closer look."

Lu Chuan zoomed in on the photo of the barbs on the corpse.

"Like the wounds caused by a body hanging from a cross, the wounds caused by these spikes are postmortem wounds."

"In other words, these spikes may have been attached during the transportation of the corpse."

"In addition, the red traces adhered to the armpits of the corpse were tested and confirmed to be dragon fruit juice."

These two laboratory results gave Lu Chuan a basis for speculation on the location of the deceased in the vehicle or after being killed.

Zhang Cuicui is in the fruit wholesale business.

Therefore, after Lu Chuan confirmed the result, he called Qin Yong as soon as possible.

"Search Zhang Cuicui's fruit company?" "Yes!"

"Zhang Cuicui's body had fruit spikes left behind after his death, as well as dragon fruit juice. The other party must have been exposed to these things after his death."

"It is now certain that the Mingde Road Church was not the first scene of the crime, so I speculate that the first scene of Zhang Cuicui's murder was probably the warehouse where fruits were stored in her company."

"Okay! I'll immediately arrange for an action team to search!"

……

after an hour.

Warehouse No. 4 of Beishan Fruit Wholesale Market.

The moment Zhang Hui and others opened the warehouse door, their eyes were filled with blood.

The walls of the entire warehouse were covered in splatters of blood.

Due to the low temperature in the refrigerator, the blood stains did not dry up, but only condensed into a dark red liquid.

It was as if the murder had just happened.

Zhang Hui immediately reported to Qin Yong: "Captain, the scene was found."

The first crime scene was found, and Lu Chuan had to do the rest.

Compared with the church on Mingde Road, there are particularly many traces of the scene here.

There were dense bloody footprints on the ground and bloody palm prints on the walls.

The bloody sharp knife was casually discarded on the ground, and the blood on it had not completely dried.

Lu Chuan quickly felt the scene, and he, Yang Lin, and Yang Sen got busy.

At around five o'clock in the afternoon, the entire scene was finally cleared.

"I'll go back and compare the fingerprints first."

At the crime scene, the murderer's palm prints were very clear on the wall.

The presence of blood on it is like a seal.

Lu Chuan believed that the results would be available soon.

As for the footprints at the scene, it confirmed Lu Chuan's previous guess.

There are two murderers.

Significant progress has been made in the investigation of the case.

In the current investigation laboratory, Lu Chuan successfully identified all the fingerprints in less than twenty minutes.

only……

The identification results were hard for Lu Chuan to accept for a while.

In the conference room, all the case investigators are present.

Lu Chuan has already reported his side's identification results.

"Is this...impossible?"

Sun Jun stared blankly at the fingerprint identification analysis report.

Suspects: Li Pingzhang, Song Tiezhu.

Zhang Hui also frowned and looked at the report in his hand: "Old Lu...is there something wrong with this?"

Li Pingzhang has basically been ruled out as a criminal suspect because the other party did not have time to commit the crime.

As for Song Tiezhu, although the investigation is still in progress, he did gamble in the casino that night, and Zhang Hui had already sent people to investigate the underground casino.

Song Tiezhu also had no time to kill.

But why did their palm prints appear at the scene?

Also, how did Li Pingzhang and Song Tiezhu know each other?
Why did the two of them join forces to kill Zhang Cuicui?

It shouldn't be.

Both of them hope to make money from Zhang Cuicui.

If she is dead, where will the money come from? (End of chapter)