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

Chapter 232 Finding Problems Bit by Bit

The Criminal Investigation Team of Haizhou City does not have a sterile laboratory, not to mention Haizhou City, even the whole province does not have such a laboratory.

Fortunately, Lu Chuan does not need a sterile environment to cultivate these larvae, and ordinary petri dishes can do the job.

When Shen Yan started to dissect the corpse, the front-line criminal police were also busy with their investigation work.

Ren Qiang and his team braved the heavy rain, starting from the place where the body was found, and went all the way upstream to find the place where the body might have appeared in the first place.

"Several police stations around have already found out about it, and there have been no new cases of disappearance recently."

When an unknown body is found, the criminal police usually investigate the local missing persons first.

According to the degree of corruption of the corpse, the time of death of the deceased can be initially delineated in about a month.

Zhang Hui focused on checking the missing persons information during this period.

In terms of gender, height, clothing, etc., there is no similar information.

"Start with the clothes on the body of the dead."

Qin Yong has obtained the preliminary survey results on the corpse's clothing.

"The size of the deceased's underwear is obviously different from the body of the deceased, and this brand of underwear is relatively expensive. There should not be many shops selling this type of underwear in Haizhou City. Check to see if you can find anything."

The clues are not great, but it is possible to make further discoveries through this.

After all, there should not be many people who can afford more than 1000 bras.

"How can the salvage team say that?"

After discovering the body, Ren Qiang immediately contacted the usual salvage team.

"Old Wu sent people to test it in the water. The water level of the river has skyrocketed. The hydrological situation below is very complicated. In addition, it is still raining. They expect that they will not find anything even if they go into the water."

Wu Jingzhong is an expert in underwater salvage and has cooperated with the criminal investigation team for many years. If he said so, it would be difficult to find it.

Qin Yong thought for a moment, then shook his head: "No, after the rain stops, we still have to let Lao Wu and the others go into the water."

"The deceased was obviously washed down from upstream, and one of the shoes was missing. There may be other things along with the body."

"It doesn't work, let's expand the search range."

Ren Qiang nodded. This was a strategic decision, and only Qin Yong in the detachment could make the decision.

"Okay, I'll call him after the meeting. The weather forecast says that the rain will stop early tomorrow morning. By then, the hydrological environment should be less complicated and it will be safer to go into the water."

"In addition, Liu Guodong called just now, and the sharp knife found in the black plastic bag at the scene was confirmed to be the murder weapon."

Yang Sen and Lao Bai had already extracted blood with the same blood type as that of the corpse on the sharp knife.

Although due to the serious corruption of the corpse, although the wound could no longer be compared with the scar of a sharp knife, the blood type was the same, and it was also stabbed by a sharp weapon.

In addition, the places where the two were found are similar, which can support the judgment that the sharp knife is the murder weapon.

"Any fingerprints?"

To solve a murder case, several important factors must be known.

First, the identity of the deceased, second, the time of the cause of death, and third, the murder weapon.

Now, the second and third factors are found, leaving only the first.

"There are no fingerprints. Lu Chuan has checked it, and the handle of the knife has been carefully wiped, leaving no traces."

"But there's a problem that doesn't quite make sense."

"what is the problem?"

Ren Qiang stood up and drew two parallel lines on the whiteboard.

"This is where the body was found, right on the bank of the Bailan River, when the body was lying on the bank with its back up."

Ren Qiang drew another straight line: "This is where Yang Sen found the murder weapon. After measurement, the distance from the corpse is more than 50 meters, 53 meters to be exact."

"The blood of the same blood type as the carrion corpse was extracted from the sharp knife, and the wound on the chest of the corpse was also caused by the sharp weapon."

"Based on the current information, it can basically be determined that this is the murder weapon."

Ren Qiang paused and pointed to the straight line he drew: "But the problem is that the black plastic bag containing the dagger is found to be more than 50 meters away from the corpse."

"So, how did the murder weapon get to this position?"

"The river washes away?"

Ren Qiang shook his head: "In the section of the Bailan River where the body was found, all the overflowing river water invaded the land at a distance of 20 meters."

"That is to say, the plastic bag containing the murder weapon could not have been washed by the river."

"Then where did the murder weapon come from?"

"Also," Ren Qiang picked up a photo: "This is the appraisal report made by Xiankan."

"There was not enough blood on the sharp knife for testing, but Yang Sen extracted enough blood from the inside of the scabbard."

"Combined with the fact that the fingerprints on the handle were wiped off deliberately, it means that when the other party was handling the handle, the blade was also wiped."

"The reason why there is still blood is because there is nothing to do with the blood inside the scabbard, or the murderer forgot to remove it."

This point is easy to understand.

After killing people, the murderer inserted the sharp knife back into the scabbard, and then wiped it when it was discarded.

But there was still blood in the scabbard.

"What's your opinion?"

Of course Qin Yong understood what Ren Qiang meant.

But what exactly is the meaning behind this?
The corpse floated along the river, but the murder weapon was thrown down?
"I think there are two possibilities."

"First, the murder weapon was abandoned by the murderer. After the murder, the other party's body was left to rot. After the murder weapon was taken away from the scene, it was abandoned at the location we found."

"Recently, due to the heavy rain, the corpse was accidentally washed into the river, and then washed to the bank just where the murderer dropped the murder weapon."

"You mean that there was the murder weapon first, and then the accidental corpse rushed over?"

"Yes, the murderer may have discarded the murder weapon at random, and the corpse was washed by the Bailan River by coincidence due to heavy rain."

"What about the second possibility?"

"The second type..."

Ren Qiang thought for a while, then shook his head: "The murderer deliberately left the murder weapon near the corpse, trying to provoke us?"

"provocative?"

Qin Yong has been handling cases for so many years, and has seen all kinds of murderers.

There are indeed some self-righteous murderers who think they are smart and cautious, deliberately leave some clues, and play hide and seek with the police.

"Yes, it was a provocation. After killing someone, he let the body rot. After finding the body washed away by the river, he followed him all the way, and then left the murder weapon at the scene."

"Of course, there is a time difference here. When the other party threw away the murder weapon, it was before the arrival of the flood control patrol."

"If you have any ideas, please tell me."

"Although the first one is a bit too coincidental, it doesn't mean it's impossible. For the second one... what's the point of him provoking the police?"

"Yes, I agree with Lao Song's opinion. Most of the general provocative behaviors are found in serial cases."

"For so many years, you haven't encountered one or two incidents, have you?"

(End of this chapter)