An hour later, Lu Chuan had already arrived at the cold storage.

"Xiao Lu, this is it, you can take a look."

Zhang Xiao's solemn face carried a hint of excitement.

Just an hour ago, when Zhang Xiao was about to leave the cold storage, he inadvertently glanced at the supporting legs of the shelves against the wall.

On the side of the supporting leg, a brown scar was found.

The front of the scar is normal, except that there are some marks on the back, the side next to the wall.

If you look at it from the front, you won't be able to see this brown mark.

The reason why Zhang Xiao was able to find it was because his position was parallel to the shelf, and the angle of the light was just right, so that he could find the scar in that position.

Then, Zhang Xiao took a closer look, but in the end he was still not sure if this was the trace left by what he had guessed.

So Zhang Xiao immediately called the current survey.

Lu Chuan squatted next to the shelf, opened the survey box, and took out the LSK fluorescent illuminator.

As soon as the lights were struck, the floors, walls, and shelves, which had not been colorless, were covered with traces of earthy brown.

"Blood!"

Zhang Xiao was just unsure, but now he saw that under the fluorescent light, there were large traces of earthy brown, and he finally determined that what he found was bloodstains!

It's just that someone has deliberately cleaned up these blood stains, and nothing can be seen on the surface.

However, blood stains can be wiped out, but hemoglobin in the blood is difficult to remove.

It is difficult to remove the protein substances in the blood with water, and even if they appear to be gone, they will actually have residues.

And this protein has a strong reflective effect on fluorescence, and when exposed to fluorescence, it will emit earthy brown light.

The research on Lu Chuanxia's bloodstains is obviously much more in-depth than Zhang Xiao's.

Fluorescence can detect the presence of bloodstains, but it does not prove whether the bloodstains are human or not.

Any trace of animal blood can emit fluorescent reflections.

"I'll take some residues, go back and do an analysis, and the results will be available in about half an hour."

Lu Chuan had just heard Zhang Xiao mention that this cold room was leased by a fruit merchant.

It is usually used to store some fruits that are not easy to preserve.

If that's the case, then there shouldn't be blood.

So, where did all this blood come about?

What's more, the reason why Zhang Xiao checked these cold storages was not because Lu Chuan found that the corpse might have been refrigerated.

"Okay, split up, give me a report to Team Leader Ren, this Zhao Wenjun...... Look where he's going!"

Zhao Wenjun is the owner of the leased cold storage, as long as he has the key in his hand.

Moreover, this cold storage has a separate entrance and exit behind the freezer that Zhang Xiao checked just now, which is relatively private.

Zhao Wenjun also transported fruits in and out through his own trucks, and it was completely convenient to transport corpses.

Criminal Investigation Detachment.

Qin Yong's office.

"Found it?"

Ren Qiang nodded heavily: "Found it, a cold storage on the edge of the Bailan River."

"Zhang Xiao found traces of suspected blood stains inside, and Lu Chuan went to the scene and found a large area of cleaned blood stains with fluorescent lights."

"The identification of the bloodstains on Lu Chuan's side has also been completed just now, and it is confirmed that it is human bloodstains."

The blood of any mammalian is red and contains a hemoglobin component in it.

Because hemoglobin is the physical carrier of oxygen transport in the blood, blood is red in color.

But there are subtle differences in the composition of different species of hemoglobin. net

This difference can be detected through experiments, and by comparing the standard ingredient list, it is possible to determine which animal left the bloodstains.

"Can you be sure that the bloodstains are the dead?"

"I'm not sure yet," Ren Qiang shook his head.

Lu Chuan has the ability to identify and analyze blood stains, but it is impossible to never have any activity.

Even on the bloodstains that have been erased, determine the attribution.

Moreover, because of the severe decay of the carrion, the blood in the body has long disappeared, and it is impossible to extract effective marking information.

It is even more impossible to make a judicial comparison.

"However, I suggest that Zhao Wenjun be investigated now, and even arraigned."

Qin Yong nodded.

A rotting corpse was found on the bank of the Bailan River, and the corpse may have been refrigerated, and a large area of blood was found in the cold storage rented by Zhao Wenjun.

These discoveries are linked, and Zhao Wenjun certainly has the possibility of being the murderer.

"Moreover, when the manager of the cold storage called Zhao Wenjun and said that there was a police officer who wanted to inspect the cold storage, the other party did not respond for two or three breaths."

When calling at that time, Zhang Xiao asked the other party to use hands-free conversation.

"The other party said that it was because I entered the elevator and the signal was not good."

"But Zhang Xiaoming heard the horn of a car on the phone."

"At first, Zhang Xiao didn't pay much attention to it, but after finding the bloodstains, Zhang Xiao thought that Zhao Wenjun should have been frightened at that time, so he hesitated and didn't speak immediately."

Many times solving the case is like this, there seems to be no abnormal move, but combined with some clues, it can be determined that there is a problem.

"Well, immediately summon Zhao Wenjun and thoroughly investigate his social relationships!"

With the target person, the rest of the work is a lot easier.

In less than a day, all the information about Zhao Wenjun was placed in front of Qin Yong.

Zhao Wenjun, male, 38 years old, a native of Haizhou City, has been in the fruit business.

"Zhao Wenjun started his business ten years ago, when durian production was reduced due to natural disasters and the price was very expensive, Zhao Wenjun had a distant relative in Malaysia, who helped him order a large number of foreign durians, and after shipping them back to China, Zhao Wenjun earned his first pot of gold."

"After that, Zhao Wenjun became a first-class fruit wholesaler in Haizhou City because he had a lot of money in his hands."

"This is also the reason why Zhao Wenjun needs to rent a cold room to store precious fruits."

"Because of the fruit wholesale business, Zhao Wenjun's interpersonal relationship is more complicated, and he knows a lot of people, but he didn't find anything abnormal through combing and investigation."

Dozens of people under Ren Qiang's hands were all dispatched to carefully investigate Zhao Wenjun's social relations.

But no one from relatives to friends, as well as the fruit wholesalers that Zhao Wenjun often works with, are missing.

Qin Yong carefully flipped through the report in his hand, his brows furrowed.

The results of the investigation about Zhao Wenjun were somewhat unexpected by Qin Yong, and this person can be said to be very clean.

Although he has money, he doesn't have any bad habits, he doesn't even smoke, and he rarely drinks alcohol.

Not to mention gambling, this person usually doesn't even play poker, and the family relationship is relatively harmonious, and there is no trace of Zhao Wenjun's affair.

"How's that over in the interrogation room?"

Just two hours ago, Zhao Wenjun had been summoned back to Haizhou City from Tianzhou City.

Qin Yong personally called the Tianzhou City Criminal Investigation Detachment, and sent someone to find Zhao Wenjun as soon as possible.

Now, the man is already in the interrogation room.