"Zhou Yang... he was naughty when he was a child and grew up with his grandma. We usually have a lot of things to do at school and don't have time to take care of him."
"Later, he was in my class in elementary school, but he didn't He likes to study.”
“It was okay when he was in elementary school. I watched him, but he just didn’t study well, but when he entered junior high school...”
From the information provided by Zhou Yang’s father, it can be said that It can be judged that Zhou Yang is actually a child who has been pampered since childhood.
Both parents are teachers. When they first started working, they had a fixed salary and their family conditions were relatively good.
However, teachers’ children do not necessarily learn well.
Back then, Zhang Hui had a classmate whose mother was a teacher. That classmate was average in his studies, and because his mother was a teacher, he could be said to have become the school bully in school.
Zhou Yang was in a similar situation. He didn't study well back then, and it became even more so after he entered junior high school. It was common for him to skip classes and go to Internet cafes.
When I took the high school entrance examination, I was not admitted to the local high school and had to go to a vocational high school.
“I didn’t learn anything real in vocational high school. On the contrary, I made a lot of bad friends. Later...”
Father Zhou sighed uncomfortably: "We can't control it anymore. We'll give him some money every month. This house...he didn't tell us the specific location. Today is our first time here."
Father Zhou actually didn’t know much about Zhou Yang.
In their impression, Zhou Yang seemed to be the good boy he was in elementary school.
"Does Zhou Yang have any particularly good friends, or a girlfriend?"
"Girlfriend... we don't know, he only asks for money every month Just called his mother.”
"As a friend, he has a childhood friend who went to a vocational high school with him, named Wang Zhi."
"Do you have a contact number?"
"We don't have one, but Wang Zhi's parents We know each other and have their contact numbers.”
……
Rooftop.
Lu Chuan and Liu Guodong basically swept the entire rooftop under the increasingly strong sun.
Collected more than thirty evidence bags.
"Master, it's almost time. I'll go back and do evidence analysis."
Liu Guodong hasn't worked continuously outdoors for such a long time, and the old waist can't stand it.
“If I had known earlier, I would have asked Lao Yang and the others to come over.”
In fact, the intensity of current survey work in the past was not as high as it is now.
For a scene like the rooftop, in the past, it probably only took one or two hours to complete.
It is even hard to say whether the string of drag marks can be found.
The joining of Lu Chuan can be said to have improved the technical level of Haizhou City Criminal Investigation Detachment by more than one level.
Lao Yang and Lao Bai were not idle in the detachment, and they made full preparations for the analysis of trace evidence.
Since the trace evidence laboratory was established, Lu Chuan taught Liu Guodong and the others how to operate these equipments when he had nothing to do.
After this period of familiarity and practice, Lao Yang and Lao Bai have become proficient in analyzing trace evidence.
Of course, this is only at the technical level. The focus of trace physical evidence analysis is still to conduct analysis based on the scene.
"Brother Yang, you do the trace evidence analysis first, and I'll go up and do the footprint and fingerprint identification."
"Okay, don't worry here, the results will be ready in two or three hours. .”
Lu Chuan still has the largest workload.
Footprint identification analysis, and fingerprint identification analysis.
Seven fingerprints were collected on the aluminum alloy door, but none were found on the rooftop.
This is not good news.
If the murderer did not wear gloves when he committed the crime, then there should be fingerprints not only on the door, but also on the rooftop. However, there are only fingerprints on the door now, so it is very likely that these fingerprints were left by other people who went to the rooftop.
The specific situation is still uncertain and depends on the results of identification and analysis.
If there are unfamiliar fingerprints, it may be necessary to collect fingerprints from all residents in the apartment.
The first thing Lu Chuan started was fingerprint identification analysis.
In any case, fingerprint identification and comparison are clues that can lead to a conclusion relatively quickly.
Fingerprints on aluminum alloy doors are mostly collected from door handles.
Due to the irregular shape of the handle, the pressure of fingerprints is relatively large, making it difficult to handle.
Fortunately, Lu Chuan has advanced fingerprint identification and analysis skills, so it only takes a little more time to deal with it, and there will never be any confusion.
In fact, this is also the biggest advantage of the Haizhou City Criminal Investigation Detachment.
If a murder is discovered elsewhere, even if fingerprints are collected, the identification may not be successful.
For example, it can be said that most of the fingerprints collected on door handles failed to be authenticated.
Soon, all seven fingerprints were identified.
But the result was not very good.
Seven fingerprints matched a total of three people.
Two of them are women in their fifties and should be the cleaning staff of the apartment.
The other person is 23 years old, and the information displayed by the system is that he is a security company employee.
In this case, it is very likely that the fingerprints were left during security inspections.
But Lu Chuan was not careless, and the information of the three personnel was immediately sent to the two action groups on the front line of the investigation.
"Brother Sun, there are three people in total. Please check over there to see if there are any problems."
"Okay, don't worry, I will check it now."< br>
After hanging up the phone, Lu Chuan focused all his energy on the identification and analysis of the footprints.
Judging from the situation at the scene, these footprints are regularly distributed around the drag marks erased by the murderer.
The footprints and shoe prints have the same texture and size, so they are definitely left by the murderer.
Lu Chuan has great hopes for these footprints.
"Xiao Lu, how are you?"
Liu Guodong came up from the basement and happened to see Lu Chuan measuring the footprint data.
The work below is coming to an end, and most of the trace evidence has completed chemical processing and has been put on instruments.
Lao Yang and Lao Bai were watching below. It is estimated that the results will be available in half an hour.
"The fingerprint identification has been completed. I have sent the results of the seven fingerprints to Team Leader Sun and others for verification, but..."
Lu Chuan pointed to the shoe print model that was rubbed out.
“Two of the owners of the fingerprints are women in their fifties, and one is a young man in his twenties.”
“However, a preliminary look at the shoe prints shows that the owner is a male, tall and tall. He is about 1.75 meters tall, but he is older, probably over thirty years old."
"That basically rules out the possibility that the fingerprint owner committed the crime?"
"Absolutely, the footprints. The identification is almost done, it will be ready in half an hour.”
Forty minutes later, Qin Yong received the footprint identification analysis report made by Lu Chuan on his mobile phone.
"Male, height 1.73 to 1.76 meters, weight about 70 kilograms, age between 34 and 38 years old."
"Slightly splayed walking shape, left foot There are specific characteristics, the little finger is missing!” (End of this chapter)