Chapter 557 Something Happened Again

Yuanguang Technology Park.

This is a high-tech park that Liancheng has vigorously developed in the past ten years. Because of the introduction of many supporting policies, many scientific research enterprises and trading companies have fallen behind here.

Especially in recent years, with the strengthening of supporting policies and the increase in the proportion of tax exemptions, more companies have settled in Yuanguang Technology Park.

Correspondingly, if a company settles in, there must be a place.

Therefore, the infrastructure construction of Yuanguang Science and Technology Park has also been advancing rapidly in the past two years.

Wanghai Building construction site.

Wanghai Building started construction two years ago with a designed construction height of 488 meters. It is planned to be completed and put into use in three years. It will be the tallest single building in Liancheng in the future and is a landmark building.

However, the construction site that used to be bustling with activity has stopped today.

The 18th-story project has just been built, and everyone is in front of the mud truck.

"what happened?"

The construction leader responsible for supervising the progress of the project came over to check with a frown.

The preliminary work of the 488-meter-long building was completed only last year. It will be completed and delivered within the next three years. The construction period is very tight.

Every day's project progress must be completed according to the plan to ensure that the entire construction period is completed within the determined time.

But now a mud transport truck actually broke down.

"Open your head, the tube seems to be blocked and no more pulp will come out."

"Blocked?"

"Ask the driver to call his boss. If they can't get it done within an hour, they will stop working at my construction site in the future!"

"Don't worry, Zhang Tou. It'll be fine soon. It'll be fine soon. The maintenance staff are already on their way back."

After saying that, he quickly stuffed a pack of Huazi.

Anyway, the boss is reimbursing the driver, so all the driver has to do is not to lose his job.

Wanghai Building is a landmark building. One advantage of such a project is that every link is monitored by departments.

The management is relatively standardized and we never owe money.

It’s not easy to get your wages back on time when working on projects these days.

Therefore, this job cannot be lost.

The man surnamed Zhang took the Huazi from the driver's hand, and his expression softened a lot: "Old Feng, you can't work here for more than a day or two."

"You don't know how tight this project deadline is. It takes three hours. If you still can't get it done, don't blame me for being unkind."

"Hey, don't worry, Zhang Tou, he'll be fine soon, he'll be fine soon."

Ten minutes later, maintenance personnel arrived at the scene.

In fact, normally speaking, the pipes of this kind of mud transport truck are not easy to get clogged.

The cement mortar transported by that thing has a special pressure system. Otherwise, how could it be possible to pump several tons of mortar from the ground to an altitude of tens of meters.

Therefore, generally even if there is any blockage in the mortar transportation pipeline, it will be flushed away under the strong pressure of the transportation truck's pressure pump.

Unless it's something extremely hard.

The blocking point was quickly found.

The pump slurry pipeline of the transport truck is not a straight line, but is broken and folded.

Every folding point is softly connected, and the maintenance worker discovered an abnormality at the first folding point.

"There should be something blocking the first folding point of the transportation pipe. Let's take it apart and take a look."

When the mortar pump is working, you can clearly see that the first section of the pipeline transporting mortar is shaking violently, but there is no movement in the later section of the pipeline.

This shows that the location of the blockage should be on the first section of the transportation pipeline.

In the office, Chen Yan was looking at files on cases that Liancheng had not solved before.

To be honest, Chen Yan didn't stay in the office for long. He came to Liancheng Detective Team for such a long time, and the total time he spent in the office was probably only a few days. Basically, he was either at the scene or on the way to the scene. .

Boom, boom, boom!

There was a knock on the door.

"Please come in."

"Team Chen," Wang Jun, the leader of the Liancheng Detective Team and Chen Yan's direct subordinate, came in: "I just received a report from the third team that a head was found at the construction site of Wanghai Building in Yuanguang Science and Technology Park."

Head?

Chen Yan closed the file in his hand and frowned: "Only one head?"

"Yes, Captain Wu Zhiguo of the third team has passed."

Chen Yan nodded: "Let's go over now and inform Captain Liu Qingshan and Captain Zhang Chaoyang."

"yes!"

A cordon has been set up at the Wang Hai Building construction site.

Three maintenance workers are being questioned.

"When we opened the transportation pipeline just now, we found that there was a round object blocking the bend. When we took it out, we saw... it was a human head."

The maintenance man who spoke was trembling all over now, and his words were trembling.

"We... thought it was something like a stone at the time. Unexpectedly, when we took it off, we saw hair..."

"Then rinse it with water... and then... it comes out."

"Then the police were called."

"At that time, the pipeline transporting mortar was blocked, so we called the repairman, and then we discovered this."

Many people at the scene saw what happened.

I originally thought it was a simple fault repair, but who would have expected that a human head would come out.

At that time, several young migrant workers were so frightened that they wet their pants.

Wu Zhiguo was reporting the situation to Chen Yan: "There were many witnesses at the scene, and we conducted a preliminary investigation of the scene."

Next to the mortar pump truck, Wu Zhiguo was introducing: "The mortar pump truck comes from this concrete mixer truck."

All machinery on site has stopped operating, and the mixing tank of the concrete mixer truck has also stopped rotating.

Chen Yan and Wu Zhiguo are observing closely.

Judging from the situation at the scene, the head should have been imported from the concrete mixing vehicle into the pump truck pipe along with the concrete mortar.

This concrete mortar pump truck is always working and never stops.

"The pump trucks here cannot be parked. After every concrete mixer truck comes, they line up here to transport mortar."

"The pipe was blocked only after the concrete mixer truck arrived, so the head most likely came out of the concrete mixer truck."

Concrete mixer truck……

Because the mortar transported by this kind of truck cannot solidify, the mixing tank is constantly running and stirring during transportation.

There is an inclined mixing mechanism inside, and the mortar in the mixing tank can be stirred out by running in different directions.

Therefore, the head should have entered the transportation pipe with the mortar from the mortar mixing tank, causing it to become clogged.

The head is still lying on the ground, and several detectives responsible for investigating the scene are taking pictures.

Chen Yan left the mixer truck and squatted next to the head.

Although the workers at the construction site rinsed it with water, they apparently stopped rinsing it after discovering that it was a human head.

At this moment, most of the head was covered in mortar, and only the mouth, eyes, and long hair could be vaguely discerned.

But the entire appearance has been blurred, and only the exposed parts have criss-crossing scars, and even bones can be seen in some places.

The wound was rough and had a large cross-section, and it did not look like it was caused by a knife.

Most likely, the mixing tank is constantly rotating and the stirring blades inside leave scars.

"Leader, can this car... continue to stir?"

Next to Chen Yan, a middle-aged man in blue overalls pointed at the mixing tank: "If it doesn't move, the concrete inside will solidify after a while, and the truck will be useless by then."

Concrete solidifies?

Chen Yan looked up and frowned slightly.

"Okay, the car can be started, but the mortar cannot be used and needs to be dumped on site. We need to see if there are any other limbs inside."

"This is no problem, no problem," the driver nodded hurriedly after hearing this: "This little mortar is nothing, the main thing is not to let the mortar solidify in the tank, otherwise everything in the mixing tank will be useless."

"This tank needs to be replaced with a new one."

After saying that, the driver hurriedly got in the car and started it. It had not been started for an hour, and now it was probably starting to solidify inside.

Buzz!

A huge roar sounded, and the entire mixing tank began to rotate slowly.

The mortar inside also started to pour.

Hua Hua...

The driver used the minimum speed to pour the mortar, so the poured out stuff was clearly visible.

Ten minutes later, all the mortar in the mixing tank was poured.

However, to Chen Yan's disappointment, there was nothing inside.

Wu Zhiguo's face was deep: "Team Chen, look..."

There was only one head, so it was basically a homicide.

Moreover, the murderer dismembered the body and then dumped it.

There is only one head in this mixing jar.

Chen Yan thought for a moment and started arranging work on site.

"First, find out the identity of the deceased as soon as possible. Captain Wu wants to send someone to send the head back to the third team for DNA identification and comparison with the missing persons database."

"yes."

"Second, only this part of the body has been found so far. We need to find other parts as soon as possible, master."

Chen Yan looked at Liu Qingshan: "Check who is the concrete mortar supplier for Wanghai Building."

Generally speaking, the concrete mortar supply station at a construction site is most likely to be from the same company.

Because even if concrete mortars have different labels, try to ensure that the mortar models and ingredients used in the same building are consistent. Different suppliers, due to different equipment, different transportation vehicles, and even different cement mortar transportation times, There will be some differences.

This has some impact on the quality of construction.

Therefore, under normal circumstances, if there are no special problems, the concrete suppliers are most likely the same.

Of course, the interests involved in favorable projects are complicated, and it is possible to have multiple suppliers.

However, judging from the current situation, the head should have been brought to the scene by a mixer truck, and the mixer truck rarely stopped on the road.

The driver just said that he drove directly from the concrete mixing station in the northern suburbs without stopping at all.

While the vehicle was driving, the murderer wanted to throw his head in... This possibility is relatively small.

"So, we need to focus on checking where all the vehicles delivering concrete from this concrete mixing station have gone. If the other party dumped the body at the concrete mixing station, then the various parts of the body may have been transported to other places along with the mortar."

"Yes, I'll do it right away."

Buzz!

As soon as Liu Qingshan finished speaking, Chen Yan remembered his cell phone. It was a call from Li Yun, the captain of the Fourth Detective Squadron.

Call at this time...

Chen Yan had a bad feeling.

The call was connected: "Team Chen, this is Li Yun. Ten minutes ago, Team 4 received a report. Someone found a severed arm in the cement mortar of a residential building in the area."

Broken arm!

really!

Chen Yan's speculation came true.

"Where exactly?"

Twenty minutes later.

No. 24 Changyang Street, Kangmingyuan residential building construction site.

"Team Chen, Kangmingyuan Residential Community is a residential area for relocation buildings. Construction started a year ago, and now the theme project of ten buildings is under construction."

"This morning, while grouting the concrete mortar, the migrant workers driving piles upstairs discovered foreign matter in the mortar."

In fact, under normal circumstances, it is very normal for cement mortar to have some foreign matter mixed in it.

Especially some construction waste, bricks and tiles, nylon bags, etc.

However, not too much, otherwise it will affect the strength of the concrete.

"Where is the worker who found the broken arm?"

"Over there, they're being questioned, all the people who were transporting the mortar are being questioned."

Chen Yan nodded: "By the way, the mixer truck that delivers the mortar... is it from Yuanfang Commercial Concrete Company?"

Um?

Li Yun looked at Chen Yan in surprise: "Captain Chen...how do you know?"

Li Yun thought for a while, maybe he hadn't reported this just now.

really.

After taking a rough look at the scene, the situation was basically the same as that of Wanghai Building.

However, because the arm is relatively small, it does not block the transmission pipe of the mortar pump truck.

The person who found the arm was a migrant worker upstairs vibrating concrete.

When pouring concrete mortar, air bubbles must be eliminated, so a concrete vibrator must be manually used to vibrate the concrete to eliminate the honeycomb pits of the concrete and improve its strength.

"I was vibrating the mortar when I felt a prick on my thigh. At first I thought it was steel bars or branches mixed into the mortar, so I took a vibrator and pounded it twice."

"Who knew it was an arm..."

The arm was found having been dug out of the concrete.

On-site investigation detectives from Team 4 are taking photos.

Chen Yan stepped forward to take a closer look.

This is a section of an arm with the right hand connected to the forearm.

The bones are slender and the fingers are slender. There is a ring on the little finger, but the material cannot be seen clearly. It has been wrapped in cement mortar.

The middle finger nail is exposed and not covered by mortar, and you can see the beautifully trimmed nail.

There are also a few diamonds inlaid on it.

This should be a woman's arm.

In addition, the cross-section of the arm is relatively smooth, with no exposed bones. It should have been chopped off with some kind of sharp weapon.

The cross section is relatively flat.

In addition, most of the arms are covered with cement mortar and cannot be seen clearly.

Chen Yan did not rush to conduct an inspection at the scene, but ordered Li Yun to send the arm directly to the third team Wu Zhiguo for DNA testing.

They were also severed limbs brought by a concrete mixer truck from a distant place. This arm and head should belong to the same person.

Li Yun arranged for someone to stay for relevant personnel to take notes, and he himself left with Chen Yan.

The two did not go back to the fourth team or the third team, but went directly to the Yuanfang Commercial Concrete Company in the northern suburbs.

When Chen Yan arrived, work had stopped on site.

Liu Qingshan had already arrived first.

"Team Chen, we have basically found out some things. The concrete mortar sent to the Wanghai Building and Kangmingyuan residential project bases is all produced by the No. 9 Mixing Station."

Yuanfang Concrete Company is a large-scale commercial mixing company with more than a dozen large-scale concrete mixing plants.

Each mixing station can actually be understood as a sand outlet. After the mixer truck receives the concrete under the conical mixing barrel, it is pulled directly to the site.

The No. 9 mixing station Liu Qingshan mentioned has now stopped operating, and the relevant person in charge stood aside sweating profusely.

Seeing Chen Yan coming, he immediately stepped forward and handed him a cigarette: "Police officer, we are operating legally. Once this mixing station is stopped, there will be problems with the concrete supply at several of my construction sites."

"When did the mixing station start working?"

Chen Yan did not take the cigarette handed over by the person in charge, but stood directly under the mixing station and carefully watched the structure of the entire mixing station.

"It's 24 hours a day. Once this mixing station is running, if it stops, it will cause huge losses. Ours basically never stops."

24 hours?