Chapter 565 The Driver Asking for Leave (Big Chapter Asking for Votes)

Moreover, 12 people personally inspected the mixer truck statements.

Chen Yan determined that the cars were very "clean" and did not contain any smell of blood.

According to the current clue analysis, the murderer is most likely the driver of the concrete mixer truck.

The other party should have brought the decomposed corpses in with a mixer truck after decomposing them.

The bodies were then dumped into the conveyor belt while the mortar was being loaded.

But there was no smell of blood in these 12 cars.

But, if not these people, who else could it be?

Zhang Chaoyang accompanied Chen Yan and asked the drivers one by one, but found nothing.

"Team Chen, could the murderer be the driver who loaded mortar at another mixing station and then deliberately threw the body into No. 9 Mixing Station?"

This is possible, but not very likely.

"I asked these people, and the driver who loaded mortar at the first mixing station never stopped at all."

Chen Yan pointed to the gate: "There are ten mixing stations in the courtyard, and the driver for each mixing station to pull mortar is fixed."

"They drove into the yard in sequence and loaded concrete under their own batching plants."

"That is to say, a mixing station basically only has one concrete mixer truck loading mortar at the same time."

"When you watch their loading process, you watch the mortar loading from behind the back of your car, and the control button for the mortar is right next to the conveyor belt."

"Each driver got out of the car and controlled the opening and closing of the conical mixing barrel. If the murderer threw the body from another mixing station into the No. 9 mixing station, it would be difficult for the driver loading the mortar not to notice it."

Zhang Chaoyang nodded.

Chen Yan is right.

If someone from another mixing station comes over, the driver loading mortar at Mixing Station No. 9 cannot be invisible.

Because the whole process is uninterrupted, one car goes out, another car comes in, and the time when there is no one in between is very short, only one or two minutes.

There is no way the murderer could succeed in such a short period of time.

So, which link is the problem?

In the office next to the mixing station.

Chen Yan checked the mortar transportation records one by one on the night of the incident.

"This vehicle, Chen Yan pointed to one of the records. I think most vehicles can transport mortar three or even four times. Why did this vehicle only transport it once?"

The custodian responsible for recording transportation volume is named Wang Zhi: "The driver of this car is named Qin Yu."

"There was something wrong with the drive shaft of his car that day. He went to repair the car as soon as he pulled the car, but he didn't come back." Didn't come?

"When was the truck of mortar he transported shipped out?"

"Well... we didn't record the specific time, but it was probably around 12 o'clock in the evening. I can't remember exactly, but it was definitely less than 1 o'clock."

"I eat instant noodles at 1 o'clock every night, and he doesn't leave for a long time before I eat instant noodles."

More than 12 o'clock but less than 1 o'clock?

Zhang Suosuo and Tao Lin were killed between 8pm and 10pm the day before yesterday.

The other party left after 12 o'clock but before 1 o'clock...

There were two or three hours in between, which was enough for him to dismember himself.

"Arrest Qin Yu immediately!"

after an hour.

Chen Yan met Qin Yu at the construction site of Wanghai Building.

"It really has nothing to do with me. I went to have my car repaired that day. I repaired it all night. If you don't believe me, you can go to the car repair shop and ask. I was there all night!"

Unexpectedly, Qin Yu was not timid at all when facing Chen Yan and others, but was just a little nervous.

"Collect the shoe prints and compare them with the shoe prints found at the scene!"

There is no need to go to the repair shop. The murderer left clear shoe prints in the water pump room. Comparing them will tell whether Qin Yu is the murderer.

But, unfortunately, the comparison results came out after ten minutes.

Qin Yu's shoes were No. 44, and the shoe prints found at the scene were No. 41.

Qin Yu is not the murderer!

Chen Ya also personally inspected Qin Yu's mixer truck and found that there was no smell of blood.

call……

The thread was interrupted again.

With so many cases, Chen Yan felt particularly tired for the first time.

While investigating Zhang Suozuo, Chen Pei's appearance made Chen Yan think that this was the murderer.

But Chen Pei is not, he did not have time to commit the crime.

While investigating Tao Lin, the appearance of Zhang Baoqiang also made Chen Yan think that this man was the murderer. However, there was no conclusive evidence at the time.

Although the other party's alibi is not particularly rigorous, it now seems that the suspicion has been completely eliminated.

When several people were questioned, as usual, they all left fingerprints, footprints and even DNA information testing in the third team.

After the murderer's footprints were found in the water pump room, Wu Zhiguo had already compared all the people who had been suspected during the handling of the case.

The feedback turned out to be...neither.

From the earrings and rings found on Zhang Suosuo's body and the necklace found in the grass on the side of Kunlun Road, it can be concluded that the murderer did not kill for money.

After investigating all the interpersonal relationships between Zhang Suosuo and Tao Lin, the suspects of the corresponding personnel were also eliminated. There is no possibility of love killing, vendetta, or killing due to interest disputes.

Now, it seems that there is only one possibility left.

Accidental homicide.

After making this judgment, Chen Yan decided to return to Yuanfang Commercial Concrete Company again.

Since the murderer dumped his body at the No. 9 Mixing Station of Yuanfang Commercial Concrete Company, he will definitely leave clues. This time, in addition to the driver transporting mortar at Mixing Station No. 9, the drivers transporting mortar at other mixing stations were also included in Chen Yan's investigation.

"Everyone was divided into 10 groups, and every driver on the night of the incident was questioned. The focus was to see if anyone noticed anything unusual that night!"

When all the clues were interrupted, Chen Yan could only adopt this stupid method.

Using the human sea tactic, all drivers who worked that night were included in the investigation.

"There is nothing abnormal. I work at the No. 1 mixing station. The No. 9 mixing station is several hundred meters away from me. I didn't pay attention."

"Our No. 2 Mixing Station is far away over there. If you want to ask about the No. 1 Mixing Station and the No. 3 Mixing Station, I can still see them. I don't know how far away they are."

"I was at Mixing Station No. 8. That night was just like any other. It was abnormal..."

Zhao Cunfeng is 34 years old today and has been doing this for just seven years. Because he often stays up late, he looks older, like a middle-aged man in his 40s.

"That night, a mixer truck seemed to have entered the wrong yard. Is this an abnormality?"

Entering the wrong yard?

Zhang Chaoyang's heart trembled: "Tell me what's going on."

"Actually, it's nothing. There are about ten commercial concrete companies in our area, and our distant company is in the middle. There are many new drivers who will drive into the yard by mistake."

"It was probably late that night. I forgot the specific time. I just loaded up the mortar and was about to leave, but there was a new car parked next to me that I had never seen before."

"I've been here for a long time, six or seven years, and I'm familiar with all the cars in the company, but I haven't heard of anyone buying a new car recently."

"Then I shouted casually. The driver was quite young and was stunned for a moment when he saw me."

"I said where did you come from? I haven't seen you before. Did you go to the wrong place?"

"The young man looked at me but didn't say anything, and I didn't pay attention. I had a car behind me waiting for work, so I left."

"Do you still remember that person's face and license plate number?"

Zhao Cunfeng scratched his head: "It was late at night, so I took a quick look. The guy had short hair and was quite fair. The car was new, and it seemed like it hadn't been registered yet."

Gan!

Zhang Chaoyang immediately reported the news to Chen Yan.

New car?

Wrong place?

Late at night?

What a coincidence!

"Immediately inspect the vehicles of all nearby commercial concrete companies, especially new vehicles, or new vehicles that were registered yesterday or today!"

"yes!"

With clues, action is not a problem.

All inquiries about the driver were suspended, and a team immediately rushed to all surrounding commercial concrete companies. In the office, Chen Yan found the custodian Wang Zhi: "Are there many mixer trucks here that go to the wrong place?"

"It's not too many, it's not every day, but it's not too few. We have more venues here, and drivers are more mobile. It's not new for some novice drivers to go to the wrong venue at night."

＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊

Chen Yan's eyes flashed as he left the office. The clue this time...

Great hope!

The location where Yuanfang Commercial Concrete Company is located is a gathering place for concrete mixing companies in the northern suburbs. The specific number of commercial concrete companies gathered in this area is 12.

Although Chen Yan arranged for 10 investigation teams to separately investigate the suspect vehicles, these companies are not small in scale. The scale of Yuanfang Commercial Concrete Company is neither the largest nor the smallest.

Chen Yan had a rough idea. Among the commercial concrete companies nearby, the largest had more than 200 concrete mixer trucks, and the smallest had more than 50 trucks.

On average, each company has about 100 vehicles. Yuanfang Commercial Concrete Company is a medium-sized company among more than a dozen companies, and its location is among more than a dozen companies.

If you don’t have clear vision at night, you may end up in the wrong place.

Liu Qingshan, Zhang Chaoyang and others asked relevant questions in other companies and got answers similar to Wang Zhi's.

This kind of thing basically happens every day in this entire area, and everyone has long been used to it.

Therefore, when the new car appeared on the night of the incident, no one felt anything unusual.

Although there are many companies and vehicles investigated, the objectives of each group's investigation are relatively clear.

There are still relatively few new cars.

Two hours later, the news came together.

"Team Chen, there were only 12 new cars purchased in the entire area on the day of the incident. These are the specific details."

“12 new cars…”

Chen Yan took the materials: "Have all the drivers of these mixer trucks been found?"

"Seven people have been found, and five others are on the way and have not returned yet."

Liu Qingshan looked at the time on his phone: "The slowest one takes about more than an hour. We have collected shoe prints from all 7 people we have found so far. The comparison result is unsuccessful."

"Now we're just waiting for the other five."

"good!"

Chen Yan put down the materials and once the first crime scene was discovered, the murderer left clear shoe prints at the scene.

Among these people, only the person's shoe prints can be compared with the shoe prints at the crime scene, so there is no doubt that the other person is the murderer.

Of course, even if there were no shoe prints, the other party must have transported the body in a mixer truck.

It had just been two days since the incident. As long as Chen Yan found the other party's car, he would most likely find some clues in the car.

Even if the other party has been cleaned, the blood test reaction does not mean that the blood will not be visible after cleaning.

The examination of blood traces is actually a very profound knowledge.

Any trace of blood left at a crime scene is unique.

Through the detection of blood traces, not only can it be determined whether the location where the traces were found is the scene of the first crime, but it can also bring a lot of information to the detectives who solve the case.

In general blood trace detection, the first step is to determine the blood trace.

Whether it is human blood or animal blood, blood contains hemoglobin, which is rich in iron ions.

The existence of iron ions is the fundamental basis for determining blood traces.

Determining blood traces is the first step in blood trace detection.

Fresh traces can generally simplify this step. Blood and paint or other red substances are still easy to distinguish and can usually be distinguished by the naked eye.

But traces of dried blood generally appear brown.

This brown color is not fixed because the blood concentration and color depth will change.

Some red substances will also leave similar brown marks after drying.

Here you need to determine whether the trace is blood or other substances. This is the first step. Afterwards, the blood type must be identified and analyzed to determine whether it is human blood or animal blood.

The blood composition of each creature is different, and the blood of some animals is not even red.

By comparing the ingredients, you can analyze whether it is animal blood or human blood.

The next step is to analyze the blood type and DNA components of the blood.

In addition to the above analyses, the investigation of blood traces has many other functions.

For example, the source, direction, and method of blood splashing can be judged from the shape of blood splashing, and the murderer's weapon and method of committing the crime can be simulated and judged.

For example, there are several common blood stain shapes.

Throwing, wiping, breathing spray or transfer.

And even if the blood stains are in the same state, unique information can be extracted depending on the size and roundness of the blood droplets.

Some experts can even determine the cause of death, the fatal location, and even whether the murderer used his left or right hand to commit the crime through blood stain morphological analysis.

An hour later, the other five drivers returned one after another.

After collecting and comparing the shoe prints, a young man named Zhang Tao was quickly identified among the last five people.

trial room.

Zhang Tao was sitting restlessly in the interrogation chair, with beads of sweat on his forehead. His eyelids were twitching, his hands were intertwined like cross scissors, and his lower limbs were shaking unconsciously. Chen Yan and Liu Qingshan interrogated in person.

"Zhang Tao, where were you at 8 o'clock the night before yesterday?"

Zhang Tao's face was as pale as paper and he had no reaction to Liu Qingshan's words.

"Zhang Tao!"

ah?

Liu Qingshan shouted, which seemed to wake up Zhang Tao: "Officer...Officer...I...I didn't kill anyone...I didn't kill anyone..."

There is no three hundred taels of silver here.

"Did I say you killed anyone?"

"Where were you at 8 o'clock the night before yesterday?"

"I...I'm driving to pull mortar"

Zhang Tao spoke stumblingly and looked very panicked.

"Zhang Tao."

Chen Yan straightened up and looked at Zhang Tao: "If we can find you, it means we have evidence of your murder."

"In the water pump house next to Kunlun Road, we found the footprints you left at the scene where you were dismembered."

"And your mixer truck. Although you have cleaned it, the blood stains cannot be washed away with water."

"Even if you don't confess now, you can still convict someone with nothing."

"I hope you can calmly think about the situation you are facing. It is your choice whether to actively cooperate with us in explaining the entire criminal process or to resist to the end."

Chen Yan's words were not serious, but in Zhang Tao's ears, every word hit his heart.

"I…"

Zhang Tao looked at Chen Yan, then looked down at the handcuffs on his hands: "I... didn't mean to kill them..."

"That evening…"

It turned out that Zhang Tao was indeed running transportation and pulling mortar that night.

It's just that his car is new and has not yet been registered. According to the requirements, it cannot be driven on the road.

The original highway would sometimes be inspected by traffic detectives, so he took the slightly farther Kunlun Road that day.

"I just came back from the city that night and saw those two people near the third traffic light intersection on Heping Road."

It turned out that that night, Tao Lin drank and called a taxi to go to the suburbs with Zhang Suosuo.

As for what to do, no one knows.

"I saw it all. The man and the woman were having sex on the roadside. When I came over, the headlights of the car caught their attention, and then the man stopped my car."

"I was driving by and took a casual look. He came up and slapped me twice. I was not convinced, so we started fighting with him..."

"But I didn't expect that the man had a knife on him. He wanted to stab me, but he was drunk and I snatched the knife away during the tearing process and accidentally stabbed him..."

"real!"

Woo woo woo…

Zhang Tao had already begun to cry loudly: "I didn't want to kill him. I really didn't mean it. It was his knife...his knife...wuwuwu..."