Wang Min and Yang Qianfeng returned to the reception room of the police station Director Yang asked: Has it been handled?

Wang Min said: It's dealt with.

You write a briefing on the rape case you solved yesterday, take it out in the morning, and report it as soon as possible. After Director Yang finished speaking to Wang Min, he said to Yang Qianfeng: There was a theft case in two units last night, and you immediately went to the Urban Construction Bureau with Zhang Lihua to investigate the scene, and the amount of theft was large, so I have reported it to Deputy Director Wang Chong, and he arranged for the technical staff of the criminal police team to rush over immediately.

Yang Qianfeng tied the box from the investigation site to the back rack of the bicycle, and went to the Urban Renewal Bureau with Zhang Lihua, who was carrying a camera. Interpol technicians have not yet arrived.

Fang Kun, the deputy director in charge of security, took Yang Qianfeng and Zhang Lihua to the corridor on the second floor, where the staircase of the four-story building was built at the right end of the house, and there was only one staircase up and down. The left side of the hallway is sealed with a glass window, and there is an office at the end of the hallway, and five offices on the right. Fang Kun walked to the door of the finance room and pointed to the stolen office in front of him and said: The opposite side is the director's office, and the deputy director is here, and this is the finance room, and we have protected the scene.

Is there no one on duty at night? Zhang Lihua asked.

Someone on duty, but the old Li on duty slept in the guard room at the gate at night, just now I asked him about the situation, he was hesitant, just told me for sure that the door of the office building must have been locked, and he opened the door in the morning, and he was still full of alcohol, I asked him if he drank too much last night? He confessed to getting drunk and sleeping until dawn. Fang Kun said angrily.

Where are the imports and exports of criminals? Zhang Lihua asked.

Then I don't know yet! Fang Kun lowered his voice again and said: The doors and windows on the first floor are all in good condition, everyone has the key to the gate, our fence is higher than other units, and we can't get in without a ladder, we all think it's an internal thief.

After the meeting, the people from the criminal police team are coming, and when they come, you arrange for two people to be witnesses and cooperate with us to investigate the scene. Zhang Lihua thought for a while and said: When we are almost done with the investigation, you ask someone to write us a report in the name of the unit! A list of stolen items from the three offices is attached.

Okay, okay, I'll arrange it. Fang Kun continued: The chief of the finance unit told me that there was no cash, and more than 10,000 yuan of treasury bills might be stolen. There should be nothing left in the office of the director and deputy deputy director.

So many treasury bills! Zhang Lihua pushed open the half-open door of the finance unit, and saw that the drawer of the desk was pulled out, all the things in the drawer were taken out, the desktop and the ground were thrown everywhere, and the entire financial room was very messy, but she saw that the safe was not pried. Zhang Lihua said: The safe hasn't moved! Treasury rolls are not kept in the safe?

The Treasury bills were only retrieved yesterday, because she had a lot of things to do yesterday, she forgot to put the safe, and she is still crying upstairs. Fang Kun explained.

You get busy first, let's see how you get in and out of the building? Zhang Lihua took the camera and Yang Qianfeng walked downstairs, first went to the backyard of the building to take a look, and found that there was a pool in the backyard, and there were some foreign objects on the pool. This is supposed to be the place where this man went out.

Then I came to the front yard, and from the outside, I saw that the glass windows in the corridor on the first floor were all closed and intact, and Zhang Lihua looked up at the sewer pipe by the window of the director's office! Walked to the wall under the window and said to Yang Qianfeng: Why is this wall so high? Nine times out of ten, it seems to have entered through the window of the director's office.

Zhang Lihua pointed to the fence and the sewer pipe and said: Go up to the fence first, there is a sewer pipe joint at the lower end between the wall and the window, and you can reach into the window by standing on the sewer joint, as long as your hand can use force, it is easy to climb in, and the window of the director's office should not have been closed last night.

How did that get up the wall! Yang Qianfeng asked.

Good question. Zhang Lihua said with a smile: This guy slipped when he climbed, you take a closer look, there are black slip marks on the wall, it should be from the next door, let's go to the yard next door to have a look.

Sure enough, as Zhang Lihua expected, next door is the yard of the coal-based company, the right side of the yard is the workshop for the production of coal-based, and the left side is the open space, where the people who buy the coal-based line up, and a pool is built by the wall of the Family Planning Commission, and it is easy to climb the wall on the pool. Walking into the pool, I found black shoe prints on it.

Yang Qianfeng didn't understand the on-site investigation, looking at Zhang Lihua's analysis and judgment, he gave a thumbs up and said to Zhang Lihua with a smile: Great, great, it can be ruled out that it is an internal thief.

Yes, progress is fast. An on-scene investigation is an inquest and investigation conducted by an investigative agency on the premises of a crime, the traces left behind and other physical evidence. The purpose is to discover and collect traces of crime and other physical evidence, to understand and study the circumstances and nature of the crime committed by the criminal, to determine the direction and scope of the investigation, and to provide clues and evidence for the investigation and trial of the case. The site investigation includes three aspects: site investigation, site visit and site discussion. Zhang Lihua went on to say: The on-site investigation should delineate the scope of the investigation and determine the order of the investigation according to the specific circumstances of the case. The investigation can be carried out along the route of the criminals entering and leaving the scene, or it can be carried out from the center to the periphery or from the periphery to the center, and sometimes it can be carried out in sections and sections, or along the terrain and the boundary of the clutter.

Zhang Lihua took out the camera and pressed the shutter in the direction of the pool and said: After determining the scope and sequence of the survey, on-site photography should be taken. First take a photo of the orientation and the whole picture, and then as the survey work is carried out, take photos of the center and details.

After taking the photo, Zhang Lihua said: Let's go, let's go back.

Zhang Lihua walked directly to the corridor on the first floor of the Urban Construction Bureau, carefully looked at each window, and finally found that although there was a window in the middle that was closed, it was not fastened. Zhang Lihua picked up the camera and said happily while taking pictures of the window: I said! It was impossible for this guy to get down from where he entered, it turned out that he went out from here, so cunning, and closed the window. After that, I went to the front yard and took a few photos, and then returned to the front of the director's office on the second floor.

Zhang Lihua said: You go get some newspapers. Ah, you

Yang Qianfeng quickly brought some newspapers from other offices, Zhang Lihua took the newspapers and padd some on the floor of the stolen office, carefully stepped on the newspapers with a camera, and took pictures from the outside to the inside to fix the scene of each office.

Yang Qianfeng watched Zhang Lihua methodically go from the director's office to the deputy director's office, and his every move was very professional, and finally when he went to the finance room, he asked: You know how to conduct on-site investigations?

Trained, but not very professional. Isn't the army engaged in one soldier with multiple abilities, and I am a police officer with multiple abilities. Zhang Lihua glanced at Yang Qianfeng while working, smiled and said: The basic requirements of on-site investigation are timely, comprehensive, objective, meticulous, legal, standardized and safe. Zhang Lihua exited the financial room and returned to the corridor, and said while covering the lens of the camera: The scene investigation has its tasks, one is to discover, fix, and extract traces, physical evidence and other information related to the crime; the second is to store on-site information; the third is to judge the nature of the case; fourth, to analyze the criminal process; Fifth, determine the direction and scope of the investigation; Sixth, it is necessary to provide clues and evidence for the investigation and cracking of cases and criminal proceedings.

Master, you are so powerful, one set of sets. Yang Qianfeng said with admiration from the heart.

Zhang Lihua glared at Yang Qianfeng and said: It's not that I'm good, these are all said in the book, each site condition is different, today the site conditions are better, Zhang Lihua pointed to the four zero door locks and door frame doors that were broken in the financial room and said: The indentation of this tool for prying doors and locks is very clear. Squatted down again and pointed to the floor of the financial room and said: I also left two shoe prints in and out of the office.

Zhang Lihua stood up and continued: Judging from the situation of the import and export and the three offices, it was a person who committed the crime, this person was very bold and had no scruples, and he should have left a lot of fingerprints.

What did you do about taking pictures? Yang Qianfeng asked modestly.

Zhang Lihua was about to answer when she saw Fang Kun coming with two technicians from the criminal police team.

Zhang Lihua happily greeted her and said: Xu Yan, He Xiaohuan, hello! Finally, I have come to look forward to you.

What do you mean by that? Is it to blame us for being late? Xu Yan asked pretending to be angry.

Don't dare, let me introduce you to you, this is Yang Qianfeng, who was newly assigned to our police station. Zhang Lihua pointed at Xu Yan and said: This is Xu Yan, a trace expert in our bureau, who is twenty-five years old and unmarried.

Xu Yan interrupted Zhao Lihua with a smile and said: Why is the introduction so clear? I'm afraid I won't be able to get married!

Zhang Lihua smiled and introduced: This is He Xiaohuan, a master of photography in our bureau.

Yang Qianfeng shook hands with them separately and said: Recruit Yang Qianfeng.

Very modest, your two performances yesterday were very good, and Director Chen praised you when the agency called you early! Now when I see a real person, he is really an extraordinary, a talent, promising, promising. He Xiaohuan said a little exaggeratedly.

Where, where, my work is rough, compared with you experts, far behind, please take care of it in the future. Yang Qianfeng said embarrassedly.

I heard that it was the master disciple you led. Xu Yan smiled at Zhang Lihua and said: Be brave and resourceful, be very low-key, and have an unlimited future.

The loss is not small, what is the situation on site? He Xiaohuan entered the working state and asked Zhang Lihua.

Zhang Lihua did not answer He Xiaohuan immediately, but said to Fang Kun: Director Fang, was the window of the director's office not closed last night?

Then I don't know yet! Fang Kun asked suspiciously: Did you enter through that window?

It's hard to talk about it at the moment, but when the investigation is over, let the facts speak, you can find out first! After Fang Kun left, Zhang Lihua introduced the basic information to Xu Yan and He Xiaohuan.

Because of the seriousness of the case, the scene was mainly investigated by the technical personnel of the criminal police team, and the two people investigated very carefully.

In this process, Zhang Lihua also took Yang Qianfeng to conduct a visit and investigation, and in the internal investigation, several key people involved were recorded.

According to the recollection of Lao Li, the doorman, after all the people in the unit got off work yesterday, he cleaned the public places upstairs and downstairs according to the usual practice, closed all the windows in the corridor on the first floor, and finally locked the door with a chain lock. After that, I took a look at the whole building in the courtyard, and the windows of the director's office and the third and fourth floors were open, but in fact, they were usually open on hot days. After doing this, the big iron door of the yard was locked to a friend's house to drink, more than eight o'clock back, the front and back yards turned around and did not find anything abnormal and went to sleep, mainly drank wine, usually got up at night to turn around, last night slept until 7:20 in the morning, 7 o'clock and a half boiled water, and sent a water bottle to the second floor of the director, deputy director of the office door, 7:10 opened the office building door, the lock is good and not destroyed, when you go to the second floor of the director and deputy director of the office door found that the situation is not right, the three doors are not closed, The doors of the deputy director's office and the financial room were broken, and I felt bad at that time, the office was stolen, and I immediately went downstairs, and after a while, the leader of the unit came to work, and reported to the leader. The unit was stolen without hearing and discovering anything. In the process of speaking, Lao Li felt very regretful.

The head of the finance unit, a 42-year-old female comrade, mainly reflected on the situation after work yesterday, the process of getting the treasury bills back, the situation of the treasury bills and the storage drawer, and so on. Because she has been busy after getting the treasury bills back, she forgot to lock them in the safe when she got off work, and she didn't find anything unusual in the whole process of getting the treasury bills, and she was sure that it was an internal thief, otherwise it couldn't be so coincidental.

The cashier of the finance unit, who was also a thirty-six-year-old lesbian, had been off work with the head of the unit and had reacted in a similar way to the head of the unit, but she had more than 100 yuan of change in her drawer that might have been stolen.

Immediately after the completion of the internal investigation, an external visit will be conducted. On the left side of the Family Planning Commission is a coal-based company, on the right is a residential area, behind is a moving company, and at the gate of the front yard is one of the main roads in the urban area - traffic road. Opposite the Urban Construction Bureau is the Xinhua Bookstore and the Agricultural Machinery Company Sales Department, after 11 o'clock in the evening, this area is relatively deserted, there is an old couple next to the traffic road in the residential area set up a sweet wine stall, is the only place to gather a little people after 11 o'clock.