"Zhao Da's guess should be correct. The second suspect may have already known that Zhou Fen and the two were planning to poison, and thus obtained phosphorus pentoxide through some way, and then took the opportunity to take action."
Everyone unanimously agreed with Zhao Yang's statement.
Su Yan also nodded slightly and flicked his fingers on the table again.
After a while, he suddenly said: "Zhao Da, ask Lu Jialiang, look at the delivery time of all workers, phosphorus pentoxide will only dissolve when it encounters cold water, and Zhou Fen injected the venom when washing the ducks. "
"The second person to poison should also be the one who injects the venom while flushing the duck."
"But this person has to inject twenty-one injections at once. His flushing time will definitely be slower than others. It is best if everyone is not present so that he can carry out the action."
"In addition, he must have discovered that Zhou and Fen only injected six, so he injected twenty-one to frame Zhou and Fen."
"So..." Su Yan said this, his fingers suddenly paused, "The delivery time of this second person is definitely behind Zhou Fen and others, and even behind everyone else."
When Zhao Yang and others heard this, their eyes immediately shone with surprise. Su Yan's discovery gave them hope again.
"I went to ask Lu Jialiang alone. He was still somewhat clear-headed when he received the goods, and he should be able to remember the order of delivery." Zhao Yang said, and went to find Lu Jialiang excitedly.
Not long after, Zhao Yang returned with a ledger in hand.
Everyone was overjoyed to see his excited expression. There must be a result, otherwise Zhao Yang would not be so happy.
"Zhou Fen and Li Yunxia were the second to last delivery, and there were two people behind them, and the quantity delivered by these two people was thirty-two."
Zhao Yang spread out the account book, pointed at the number of ducks slaughtered by each worker and registered the order, and then said excitedly.
Su Yan took a look and found that the registration order was row by row. Obviously, the first to register was the first to deliver.
The last two delivery people were named Wu Ying and Lang Ping, both women.
Wu Ying and Lang Ping each had sixteen ducks.
"Hiss", everyone took a breath when they saw this.
"There are twenty-one poisoned ducks. If they were poisoned by one of them, the number would not be enough!"
"Isn't it rare that Wu Ying and the others also committed a crime together?"
Someone immediately asked in confusion.
"They should have committed the crime together, otherwise the number is wrong!" Su Yan nodded and said solemnly.
Okay!
Seven workers, four of them are criminal suspects. This Lu Jialiang's ability to recognize people is really terrible!
"It's a pity that we have no evidence for these two people. Otherwise, after an interrogation, the whole truth of the case may be revealed!" Zhao Yang suppressed the excitement in his heart and said with a slightly regretful tone.
Previously, everyone searched everyone's bags, and also searched Wu Ying's bags. No clues or evidence were found, and there was no residual venom.
Therefore, Wu Ying and his wife did not bring syringes to the scene in this way.
Although everyone felt it was a pity, they were still very happy to be able to identify the suspect.
After all, being able to pinpoint a criminal suspect is already a good result compared to knowing nothing.
"There was no venom left in these two people's bags. How did they bring the syringes to the scene? They couldn't just go there with them in their hands!" someone said.
"Could they have placed the syringes at the scene beforehand? Then they would start washing them!" someone speculated.
"The two of them are the last to rinse the ducks. How many faucets are there? How can they know which faucet others use?" someone immediately retorted.
"What a coincidence!"
Su Yan was looking through the interrogation transcripts of the seven workers. When he heard this, he couldn't help but smile: "It's really possible that they put the syringes in advance."
As he spoke, he pointed to the inquiry transcript of one of them, and then said: "This person's name is Zhang Dazhuang. He mentioned this casually during the conversation. The first person to rinse the duck was Wu Ying."
When everyone heard this, they hurriedly came over to watch. Everyone couldn't help being surprised and happy when they saw it. Just as Su Yan said, the transcript did mention that Wu Ying occupied the faucet first.
"Let's check those faucets immediately to see if we find anything?"
Zhao Yang said immediately.
Su Yan nodded, and he and everyone went straight to the slaughtering hall.
When passing by the hall, everyone saw Su Yan and the others walking in a hurry and looked at them curiously.
"Did we make another discovery?" someone whispered.
"That's not right. Aren't Zhou Fen and Li Yunxia arrested? What are these police still investigating?"
Everyone was talking quietly.
Su Yan and others came to the slaughtering hall and found that there were four faucets. Without waiting for instructions, everyone dispersed and searched individually.
After a while, a policeman whispered: "Zhao Da, Officer Su, come here and take a look."
Su Yan, Zhao Yang and others immediately ran over and saw the policeman pulling out half a brick from the neatly cut wall.
After taking a closer look, Su Yan immediately said: "The traces are the latest. The space inside should be the size of a brick. Someone has hollowed out half of the brick."
"This should be the place where the syringe is placed." Zhao Yang said immediately.
As he spoke, he turned to the technician and said, "Check it to see if there are any venom residues."
The technician immediately opened the tool box and began to inspect it carefully.
Su Yan followed the direction of the faucet and walked to the sewer.
"Will the suspect throw the syringe in?" Zhao Yang also came over. He looked at the sewer and asked Su Yan.
Su Yan said: "It should have been thrown inside. Since they hid the syringe in advance, they probably knew that phosphorus pentoxide is extremely poisonous, so they did not dare to put it in the bag, and probably did not dare to take it away."
At this time, in addition to the technical staff conducting inspections, other people also came over to join the discussion.
"The syringe should have been washed away. There may not be much chance of searching for it!" someone said.
Su Yan squatted next to the sewer and observed carefully for a while, and then said: "Wu Ying and I were the last two to flush. After them, no one will flush again."
"So the discarded syringe should be not far below. There is still a chance to find it."
As soon as he heard what Su Yan said, a young policeman immediately said, "I'll go down and take a look."
Zhao Yang also agreed with Su Yan's statement, but to be on the safe side, he found a pair of gloves that Lu Ji used when baking at high temperatures, and asked the young policeman to put on heavy clothes and rubber shoes before letting him go down.
The reason for this caution is that phosphorus pentoxide is extremely toxic, so you can avoid damage.
After opening the lid, the entrance to the sewer is large enough for one person to go down.
After the young policeman got down carefully, everyone turned on their high-beam flashlights to illuminate the young policeman.
With the help of the light, everyone discovered that the water in the sewer was not deep, but only reached the policeman's ankles!
