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

Fingerprints on snakeskin bags are not very easy to extract.

Generally speaking, fingerprints can be preserved for a long time if the external conditions are relatively constant.

When Lu Chuan was in college, his teacher told him about a case in which a fingerprint was preserved for more than 30 years.

The fingerprint was preserved on the handle of a dagger.

This dagger was the weapon used by the murderer to kill people. After the murder, the suspect threw the dagger into the well.

Generally speaking, if a dagger is thrown into water, it will quickly rust due to the erosion of water flow and oxidation, and the surface will be corroded. In this way, even if fingerprints are left on it, they will be cleaned quickly.

Although the handle is made of wood, after being soaked for a long time, the wood will absorb water and expand, and some things on the surface will be washed away. This kind of fingerprint is actually very difficult to preserve.

But it just so happened that after the crime happened, a drought hit the area and almost all the wells dried up. The same was true for the well that the suspect threw the dagger into.

Because there was no water flowing in the well and groundwater was not fully replenished, the water in the well evaporated quickly and the dagger was buried in the mud.

Because of the hot weather, the mud dried up quickly, so the entire dagger was protected and isolated from the oxygen outside.

Later, the suspect was arrested for other cases and this case was brought up. However, it had been 30 years since the crime. Although the murderer had confessed and thrown the dagger there, the police felt that there would be no clues left.

But this dagger is the murder weapon after all, so we must find it even if there are no clues on it.

However, what the police did not expect was that because the dagger was buried in the mud, it was physically isolated from the outside world. There was no corrosion from oxygen and no erosion from water. As a result, when the dagger was discovered, it looked like it had just been thrown down, and the blood stains on it had not even completely dried up.

The fingerprints on the handle are also clearly visible.

However, this situation only occurs in extreme cases, because the fingerprints on the handle of the knife can remain because it is physically isolated from the outside world under the protection of silt.

However, there was no water in the dry well where Zhao Haitao and Li Haiyang buried the gold.

The preservation conditions were not particularly good, but fortunately the place where they bought a layer of gold was in a horizontal hole inside a dry well.

In addition, this dry well has been abandoned for many years and there is no water shortage in it, so it is relatively well preserved, not exposed to the wind and sun, and no one has moved it, so the fingerprints on it are relatively easy to clean.

According to the information recorded in the first volume of the robbery case, the snakeskin bag should have been taken away by the three robbers.

So logically speaking, there should be fingerprints of the three robbers on these gold jewelry, because they used their own snakeskin bags to put the gold in the carriage into these bags, so they must have come into contact with the gold.

There are also their fingerprints on the snakeskin bag, and Lu Chuan is extracting these fingerprints.

In addition, if Zhao Haitao and Li Haiyang were indeed involved in the gold robbery, then their fingerprints should also be found on the surface of the snakeskin bag. It is hard to say whether they touched the gold inside.

Of course, from a human perspective, it is highly likely that these two people moved, so the fingerprints on the gold are also the focus of Lu Chuan's investigation. However, due to the heavy workload, he asked two other on-site investigators from the Criminal Police Brigade to analyze the fingerprints on the gold.

It is easier to identify fingerprints on gold, but it is very difficult on a snakeskin bag.

Because the fingerprints left on the snakeskin bag are made of soft material, it would be very troublesome to detect them.

Lu Chuan also studied for nearly three hours before he finally extracted some relatively broken fingerprints from the snakeskin bag. Although broken, if it is compared with the target fingerprint, it is still rewarding. After all, the police now do not need to use the fingerprints on the snakeskin bag to find the suspect, but only need to compare with the fingerprints of Zhao Haitao and Li Haiyang. As long as there is an overlap, it means that these two people must have touched this snakeskin bag.

really!

Lu Chuan worked for several hours and finally found that three of the broken fingerprints matched two of Zhao Haitao's and one matched Li Haiyang's.

Hearing Wang Zhaokai's question, Lu Chuan nodded: "Success!"

"Great!"

evidence!

The most important thing in handling a case is evidence.

Even though the police suspected that Zhao Haitao and Li Haiyang were involved in the robbery case that year, there was no witness or evidence and the current situation of these two people as Li Haiyang was still unknown, but Zhao Haitao refused to speak.

In this case, if Li Haiyang insists and does not say what happened at that time, the police will really have no other way to deal with the two of them.

In fact, this is indeed the case.

Although Li Haiyang was arrested, he was just like Zhao Haitao, as stubborn and stinky as a stone in a toilet. He refused to explain why he left Haizhou City, why he got a fake ID, and why he cancelled his phone number.

It is obvious that when these two people left, they had already discussed when to return, what to say if they were caught by the police, and so on.

In the interrogation room.

"Captain Chen, seriously, please don't waste your time here. I do know Li Haiyang, but we are not close. I don't know why he left us and talked about me. I didn't do anything illegal. I just stole some things. You should detain me and I should return the stolen goods to him."

Ha ha.

Chen Jiang sneered.

"Zhao Haitao, at this point, do you still want to resist to the end?"

"Li Haiyang is being interrogated next door right now. Don't you want to hear what he has to say?"

next door?

Zhao Haitao was stunned!
But then he calmed down.

After the two of them hid the gold, they discussed in detail what they should do if the police found them.

The two people actually picked up the snakeskin bag on the roadside, but that doesn’t mean they didn’t know what happened that year.

After the two men picked up the snakeskin bag and saw that it was full of gold, they were immediately stunned. Then they saw a police car coming from behind. They were scared silly, but the police car whizzed past and did not notice them.

Then the two heard gunshots coming from the front, and then they ran back to the yard where Zhao Haitao rented the house with the snakeskin bag. (End of this chapter)