Not long after the young policeman went down, he shouted to the top in surprise: "I found a syringe."
"Be careful and bring it up."
Zhao Yang and others above were shocked and immediately asked him to bring it up carefully.
As the young policeman brought a syringe and handed it to the investigation technician, Zhao Yang immediately asked the technician: "Can the fingerprints on it still be extracted?"
The technician wore rubber gloves and carefully held the syringe. He looked at it for a moment and then said, "I'll try, but I'm afraid it will be difficult."
Everyone present was an experienced criminal police officer, so they naturally understood that it was indeed difficult to extract fingerprints that had been soaked in water.
Because water can not only wash away fingerprints, but also cause microbial reactions to gather and multiply, which will make fingerprints blurred or even disappear.
However, with just in case thoughts in mind, several technicians decided to give it a try.
While the technicians were discussing how to extract it, Su Yan and others were waiting anxiously for the extraction results.
Time passed slowly, and half an hour later, Su Yan and others heard a surprised cry from a technician.
"Successful!" Su Yan and others immediately looked over.
The technician nodded happily to everyone: "A fingerprint was extracted from the top of the syringe, and it was from the thumb."
"good!"
When everyone heard this, they all cheered for the technicians.
Someone immediately took out the interrogation transcripts of Wu Ying and Lang Ping, which contained the fingerprints they had pressed when they were questioned just now, and they were thumbprints.
The comparison work ended quickly, and the technician once again surprised everyone and told everyone: "The fingerprint is Wu Ying's."
"good!"
Zhao Yang and others shouted happily again.
"Interrogate Wu Ying immediately, and monitor Lang Ping to prevent her from slipping away!" Zhao Yang said immediately.
When everyone returned to the hall and Zhao Yang asked Wu Ying to be taken away, everyone in the hall was stunned. How could this matter have anything to do with Wu Ying?
Su Yan noticed that a woman standing with Wu Ying in the crowd looked very pale at this time.
Can't help but secretly nod, this woman should be Lang Ping.
Su Yan did not participate in the interrogation of Wu Ying.
The interrogation ended quickly.
The two policemen returned to the lobby again and walked directly to Lang Ping: "Lang Ping, come with us."
Lang Ping immediately exclaimed, and her legs and feet couldn't help but tremble.
All the employees of Lu Ji looked at each other in surprise. How come they just arrested Zhou Fen and now Lang Ping and Wu Ying are in trouble again?
Seeing that Lang Ping could barely walk, one of the police officers took her to the next box for interrogation.
Another policeman came to Su Yan and whispered: "Officer Su, Zhao Da also invites you to come. I'm afraid the matter is not simple."
Su Yan was startled, nodded slightly, and followed the policeman to the box next door.
Seeing Su Yan come in, Zhao Yang handed over the interrogation of Lang Ping to other comrades, but he pulled Su Yan to the next room.
"Xiao Su, we have obtained Wu Ying's confession. Things are really fucking haunted!"
Zhao Yang handed the transcript in his hand to Su Yan and asked him to read it.
Su Yan took the transcript and read it quickly. When he finished reading, his face became extremely solemn.
According to Wu Ying's confession, she and Lang Ping did inject phosphorus pentoxide, or metaphosphoric acid, into the ducks they cleaned.
Afterwards, the syringe was thrown into the sewer.
However, Wu Ying said that they injected a very small amount of metaphosphoric acid, which can only cause slight poisoning, but not death at all.
The reason why they poisoned the ducks was because a customer complained that they didn't rinse the ducks cleanly. Lu Jialiang scolded them, and they held a grudge.
And by poisoning as many as twenty-one ducks, they wanted to make things worse and completely destroy the Lu family.
As for the source of phosphorus pentoxide, Wu Ying had a relative who worked in a hospital, and she got it from that relative.
"I have sent people to summon Wu Ying's relative. I believe there will be news soon!" Zhao Yang said.
Su Yan nodded. This poisoning case was more complicated than he imagined, involving so many people.
Soon Lang Ping's interrogation ended. Her confession was very similar to Wu Ying's. It was she who overheard the conversation between Zhou Fen and Zhou Fen and knew about their actions, so she told Wu Ying.
Once the two of them got together, they simply made the matter a big deal.
Not long after the interrogation here ended, the police who summoned Wu Ying's relative also called.
The other end told Zhao Yang that what Wu Ying said was true, and her poison came from the hands of that relative.
At the same time, the relative told the police that the amount of poison he injected into twenty-one ducks would indeed not kill people, and would only cause a mild reaction at most.
After everyone knew the result, they gathered in the box to discuss.
"Could it be that Zhou Fen and the two poisoned a large amount of poison, and they injected the duck that poisoned people?" someone speculated.
"I have asked experts to analyze the amount of poison Zhou Fen and his wife gave to see if the poison they gave can kill people?" Zhao Yang said.
Su Yan and others nodded. It seemed that they could only wait for the experts' results.
At noon, everyone at the scene divided into two groups to eat again. After everyone finished eating and gathered together again, Zhao Yang's cell phone rang.
After he answered, his expression suddenly changed.
As he hung up the phone, he looked at Su Yan and others: "Experts called just now. According to their analysis and research, the amount Zhou Fen took was injected into six ducks without causing death!"
Good guy!
Everyone was stunned when they heard this.
"That is to say...this poisoning case also involves a third group of people?" Someone couldn't help but swallowed with difficulty and said with difficulty.
If it weren't for Su Yan's observation and inference that Zhou Fen and the four people were poisoned, everyone would have been at a loss. Unexpectedly, there might be a third group of people now!
"Damn, these guys are so cunning!" Zhao Yang couldn't help but punched the table and said fiercely.
Zhou Fen and four others poisoned twenty-seven ducks, so how did the third person poison them?
"The number of poisoned ducks is correct. There should be only twenty-seven. So, where did this third batch of poisoned ducks come from?" someone asked doubtfully.
"Also why did he do this? Twenty-seven ducks were poisonous, which was enough to cause the Lu family's salted duck restaurant to close down. Why did he increase the amount of poison?"
"Does the Lu family really have a deep hatred for anyone?" someone else speculated.
"It's not like that. We have done a lot of investigation and inspection work before, and almost no details have been missed. It doesn't seem like the Lu family has such an enemy!"
Someone immediately retorted.
Others also nodded. As he said, the Lu family does business and makes money out of anger, and indeed there is no such big enemy.
Even if they compete with each other, their goal is just to bring down the Lu family, there is no need to poison people to death!
"In addition, all the evidence and clues do not show that there is a third poisoner. If there is a third person, how did he poison him?"
No one can give an explanation to the questions raised by everyone.
In the end, everyone's eyes were focused on Su Yan. At this time, Su Yan was their backbone, and they all hoped that he could help them and others solve their doubts.
Su Yan did not participate in the discussion just now. He sat alone and flicked his fingers quickly on the table.
