After the second on-site investigation, Lu Chuan collected all the relevant physical evidence and sent it to the Criminal Investigation Detachment.
Criminal Investigation Detachment, now investigating office.
“Bureau Lu is here, it’s hard to welcome him from afar!”
Yang Sen and Yang Lin greeted Lu Chuan with a smile.
Lu Chuan hasn’t been to the Criminal Investigation Detachment for a while.
Some time ago, Lu Chuan had a lot of cases, and he still went to Tianzhou City for a business trip. Even if there were no cases, the affairs at the branch were more complicated and there were more meetings, so Lu Chuan probably had more than three I haven't been to the site survey office for months.
"Come here, I have something to do this time. I will use our laboratory later..."
Although he has not been here for a while, Lu Chuan still feels that this is the most comfortable place.
I met a lot of acquaintances on the way in. Although Lu Chuan has not been here particularly long in the criminal investigation detachment, Lu Chuan feels that he has the most acquaintances in the criminal investigation detachment.
After all, this is where Lu Chuan's career started, and it is also where Lu Chuan moved step by step from the technical route to the leadership position.
Whether it was Qin Yong, Zhang Hui, or Liu Guodong, they all helped Qin Chuan a lot.
But it was not a coincidence that I came back this time. Liu Guodong was on vacation and was not here these two days. Qin Yong went to the city bureau for a meeting, and Zhang Hui went out on a case.
The current survey office is quite full of people, but Lao Bai will retire in less than a month. In two days, he can choose to take a vacation and then go through the retirement procedures.
In this case, the current survey office will be short of staff again.
Originally, there should be four people in the current survey office. When Lu Chuan first arrived, the staff was just full.
However, after Liu Guodong was promoted and left the current survey office, there has been a shortage of staff.
Coupled with the fact that Lu Chuan was assigned to the Criminal Police Brigade of the High-tech Zone Branch, there were even fewer people here, and Liu Guodong had no choice but to take control of the office affairs.
Fortunately, Yang Lin came over to supplement the shortage of personnel here.
But time flies so fast. When Lu Chuan first joined the company, Lao Bai was 55 years old. Now he is 59 and about to turn 60. He will retire in just over a month.
"If you don't come here again, you won't be able to see me..."
When Lao Bai saw Lu Chuan coming over, he was obviously very happy to tease him.
"I asked you to say this. You are just retired, not dead. I can't see you anymore. Come on, come on, Lu Chuan, sit here."
Yang Sen interrupted. .
Yang Lin poured tea for Lu Chuan: "Come on, Director Lu, please have tea!"
Yang Lin and his classmates Lu Chuan are not uncommon, and they have seen them more recently. , we all got together for a drink some time ago when the child was celebrating his 100th birthday.
Although Yang Lin has been with the Criminal Investigation Detachment for just over a year, he has actually become the technical backbone of the current investigation office.
Yang Lin himself has a professional background. He can always ask Lu Chuan if he doesn’t understand anything. He also has experience at a grassroots police station, so he is growing up very quickly.
Over the past year or so, Yang Lin's spot investigation technology has advanced by leaps and bounds. Although it cannot keep up with Yang Sen and Lao Bai, it is still much better than the limited-release detectives in other branches. In particular, Yang Lin is actually more familiar with the technology in some new and cutting-edge fields than Yang Sen and Lao Bai, but he is slightly less experienced.
Now Yang Lin is a key training target of the Criminal Investigation Detachment.
When Lu Chuan came to the Criminal Investigation Detachment, Liu Guodong was only 46 years old, and now he is over 50 years old. Basically, he will not move in his current position as deputy detachment leader.
Now let’s look at the office director, Yang Sen. Yang Sen was 40 years old then and now 45 years old, which can be said to be in his prime, but he will only work for another five or six years.
When the time comes, it will be logical to look at the position of office director, which is Yang Lin's.
And Yang Lin is only 29 years old now, and in a few years he will be a little over 30 years old.
There is also the possibility of going further in the future.
"Don't make fun of me, kid. Did you run away halfway during the last meal and drink?"
Lu Chuan took the tea. Compared with Yang Sen Lao Bai, Yang Lin and Lu Chuan actually talked more casually. The two of them not only They are classmates and the same age.
"Can you blame me? We have a meeting the next day. We originally said we would drink less, but these guys tried their best to blame me. If I didn't run away, I would have to drink under the table."
A few people chatted for a while and then got involved in the case.
“Basically, it can be determined that it was a homicide. The traces found at the scene prove that the murderer is likely to kill the person again. The body was dismembered in the bathroom at the crime scene, and then the body was put in a suitcase. Shipped out.”
Lu Chuan came here to test the blood condition and see if he could confirm that the other party was Wang Lili.
Because Wang Hong is Wang Lili's biological aunt, Lu Chuan collected her blood and compared it. As long as there was a blood relationship, it would be fine.
The other thing is the kitchen knife.
The kitchen knife is not necessarily the murder weapon, but it should be the tool used by the other party to dismember the body. This should not be a big problem.
It’s just that the killer of this kitchen knife has been carefully cleaned. It’s not certain yet whether there are any valuable clues on it.
In addition, there is the kitchen sink, the sewer pipe and the bathroom sink sewer. Lu Chuan also brought some debris in the pipe, which needs to be analyzed for trace evidence.
"If this is fine, just leave it to me. The results should be available in two days. I have to work overtime and it will be out tomorrow. However, you know that trace evidence must be slower. The fastest and the best It will be two days later."
Of course Yang Lin and others will not refuse, and it is impossible for Lu Chuan to work overtime here to do these things.
Now Yang Lin is very familiar with all the field investigation experimental equipment in the Criminal Investigation Detachment, especially the analysis of trace substances.
Now all the evidence below that there is a need for this is done by Yang Lin.
Damn it, since the modern equipment of the Criminal Investigation Detachment has been updated and iterated, the crime detection rate of the entire Haizhou City Public Security Bureau has actually increased.
In the past, whether it was the criminal investigation detachment, technical appraisal, or the center, most of the technical judgments made about on-site investigations were based on limited fingerprints or DNA.
But things are different now. With trace physical evidence, Analyst Yang Lin has done more experiments and provided more technical support and help.
For example, the discovery of some fibers, hairs and other details can be used to infer the circumstances of some cases through the identification of trace evidence techniques. (End of this chapter)