Xiang Yaxin, the technical squadron leader of the branch, was very depressed. He came to the fertilizer factory with Lao Kong and Xiao Chen and other technical policemen in the morning. Although the work of digging the septic tank was done by Xinyuan Police Station to find migrant workers, the feeling of staying by the septic tank was not good, the smell was so stinking and disgusting. Unexpectedly, when he went back, he took a shower and changed into clean clothes, Liu Jianye asked him to come to the scene again.

Xiao Chen jumped out of the car with the survey box and couldn't help but mutter: "Team Xiang, this is the fourth trip. The scene is so big. We have carefully investigated it three times. What else can I do to investigate?"

Xiang Yaxin turned around and glared at him: "Liu is in front of you, stop talking nonsense."

Lao Kong patted him on the shoulder: "He is now the leader of the task force, so we can do whatever the leader asks him to do."

Yu Guosheng is a forensic doctor. He often deals with corpses and talks less. He followed the three people silently, thinking that the victim's body was in the freezer of the funeral home, and it was certain that this was the scene of throwing the corpse. What's the point of asking the forensic doctor to come to the scene one by one left and one by one?

While muttering, Liu Jianye, who was standing under the small tree by the river, suddenly turned around and asked: "Yaxin, can you extract DNA from the victim's urine and test it?"

Xiang Yaxin was confused and said in confusion while wearing gloves: "Liu Su, what is the use of extracting the victim's DNA? What we are going to investigate now is the suspect!"

"You first tell me if I can detect it?"

"It should be possible," Xiang Yaxin subconsciously looked back at Yu Guosheng.

When Yu Guosheng saw Liu Jianye looking at him, he quickly said in a positive tone: "Yes, because human urine will more or less bring out some dead cells from renal sacs or renal tubules. As long as human cells have the same and equal amount of DNA, with current technical level, the DNA laboratory of the Municipal Bureau Forensic Inspection and Identification Center can easily judge the identity of the deceased based on the urine or other residues of the deceased."

Time is urgent, and Liu Jianye doesn't want to go around with them.

Confirm that there was a DNA in the urine, pointing to the septic tank and saying, "You have been here in the morning. Everyone knows why I checked the septic tank. Although I couldn't take out anything from the septic tank, it could not rule out the possibility that the suspect originally planned to throw the victim's body into the septic tank. I just thought about it and I think it's not difficult to verify or rule out this possibility."

Xiang Yaxin asked in confusion: "Liu Su, how do you verify this?"

Liu Jianye pointed to the septic tank again, pointed south along the river bank, then walked to everyone and analyzed: "There is no wall in the south, and there is no wall in the river bank to the river surface. The suspect theoretically can carry the body to the scene of throwing the body from the south or the north, but the south is full of garbage, and the slope in the north is steep, which is not only difficult to walk, but we have not found any traces of footprints, which means the suspect comes from this direction!"

These have been confirmed, and it is even certain that the suspect came in from the gap in the fence that had collapsed for many years in the northeast corner of the factory, because half of the footprint was found on a brick at the notch, and compared with the footprints extracted by the river.

Xiang Yaxin and others didn't know what Liu Jianye wanted to express. Before they could ask, Liu Jianye pointed to the open space of Xiaoshu and said expressionlessly: "Think about it, if the suspect really intends to throw the body into the septic tank, then should he put the body down, go and open the cover of the septic tank first, and then come back and throw the victim's body into the septic tank, and then cover it?"

Lao Kong reacted and subconsciously said: "It may also be carried directly to the septic tank, but the body must be put down. After all, a person only has two hands unless the suspect has an accomplice."

"Only one person's footprint was found on the scene, and there is little possibility of multiple people committing crimes. Now, let's look at you, please work harder and carefully investigate the scene to see if the suspect's urine can be extracted."

It is easy to detect DNA from urine, but whether the victim's urine can be extracted from the scene is another matter!

After all, urine is not a blood stain. Even if it is present on the spot, how can it be revealed?

Xiang Yaxin is so big, Yu Guosheng also feels that this task is not a little tricky. Liu Jianye doesn't care about that much. He took out his mobile phone to check the time and said in an unquestionable tone: "Comrades, the scene is so big, the investigation task is not heavy, three hours should be enough. Please collect more samples. I have reported to Bureau Feng. Bureau Feng has also greeted the Forensic Inspection and Appraisal Center. Special matters are handled. As long as the inspection materials we sent will definitely be given priority."

Director Feng knew about it, and even said hello to the Forensic Inspection and Appraisal Center of the Municipal Bureau. He said something to Yaxinneng. He could only agree with a gritty bullet and said, "Yes, we will do our best."

...

At the same time, Lao Tang and Miao Haizhu are transferring records of foreign populations in Xinyuan Street Police Station in the past few years and renting in several urban villages and communities around the fertilizer factory. The scope of investigation has been expanded. We must not only investigate locals, but also investigate foreigners. This work must be done by the police from the Xinyuan Street Police Station.

But when I moved several large stacks of foreign population accounts to the small office inside the household registration room and opened it, Miao Haizhu was stunned.

"Master, there are only ID card information of outsiders, occupations, rental address and contact information on the ledger. There is no registration of height and weight. How do we check this?"

"At least there is an address and contact information," the jurisdiction found a murder case, either in the small task force to investigate or assist in the college task force to investigate. Lao Tang had a good attitude, moved the landline phone number to his face, and looked up and said, "Call the landlord first and ask if the landlord has any impression of their tenants. It is best if the landlord can remember it. If you can't remember it, contact the tenant directly."

Miao Haizhu said frustratedly: "If the tenant can't contact you, many people often change their mobile phone numbers, especially those who come out to work."

"Don't you have ID card information? If you really can't send a letter of investigation to the police station where you are registered."

"Master, you are very light. Look at how many people there are. Call one by one, can we get in touch?"

"Haizhu, if you can't contact me, I'll arrange to contact you." Bao Qingshan heard the conversation between the master and the apprentice as soon as he arrived at the door. He walked into the office and said firmly: "As long as you can collect clues, as long as it is conducive to solving the case, what is the number of phone calls, and what is the number of letters of cooperation? Don't worry, I'll draw someone to help now."

The director attached great importance to it, and Miao Haizhu was so happy that she couldn't help but smile and said, "Thank you, Su Bao."

"Why thank you? This case will not be solved every day, and the life in the institute will not be better every day. That's it. I'll call you someone."

………
Chapter completed!