The whereabouts of the suspect after entering the teaching and research building were basically found out.
However, the monitoring outside the teaching and research building can only be kept for half a month, and the whereabouts of the suspects outside the teaching and research building can not be found through monitoring.
The biggest problem of stealing corpses is how to transport them out.
It is one stage to transport the teaching and research building from the storeroom, and another stage to transport the teaching and research building from the school.
Besides, this case is not just about theft.
The female teacher could not have appeared out of thin air. She should have been transported to the school from outside and placed in the formalin pool for a period of time. After the body was embalmed, she moved away.
This behavior is somewhat intriguing. What is the ultimate goal of the suspect?
If it's just for the sake of anti-corrosion, it's OK to find a hidden place. Why do you have to transport it to the school?
How did the suspect transport the body into the school and then transport the body away?
Han Bin thinks that the suspect is either bold or has an insider in school.
"Director Ma, are there many school staff in July?"
Ma Tao thought for a moment, "ah, I'm not sure about that. The situation of various departments is also complicated."
"Director Ma, you should also see that this case is not a simple theft case. It may be more complicated than we thought. I want to have a more comprehensive understanding of the school. I'd like to meet the senior leaders of your school."
Ma Tao showed a wry smile, "I can't decide this situation. I need to report it to the school leaders."
"It should be." Han Bin took out a business card, "it has my phone number, you can contact me directly."
"Good." Ma Tao took the card, said hello to the crowd, and then left the monitoring room.
After that, Han Bin also left the monitoring room, took Guo Tianxu and Bao Xing back to the back door of the teaching and research building, while Li Qin and swallow stayed in the monitoring room to continue to check the video to see if they could find more clues.
Han Bin back to the back door of the teaching and Research Office, one is to see if the suspect left a clue, and then, check the suspect in and out of the school route.
Han Bin starts from the door of the teaching and research building, and turns around the school, but finds no obvious trace.
In fact, it's normal to think about it. More than a month has passed, and even if there are clues, they are almost destroyed.
"Captain Han, you are here. I finally found you." Wang Jinliang, the deputy director of the academic affairs office, came panting, with a woman about 40 years old beside him.
"To introduce you, this is sun Yuefen, director of the general affairs department."
Sun Yuefen took the initiative to say hello, "Hello, Captain Han."
Han Bin said politely, "director Sun, please take a special trip."
Sun Yuefen was very frank, "yes, it's all about the school. If you have anything, just say it."
"Do you have a copy of the key to room 207 on the second floor of the teaching and research building?"
"Yes, we have a backup of the keys to most of the rooms in the school."
"Where are the keys stored?"
"The general affairs office has an office, which is specially used for storing keys and information. The door of the office is generally locked, and the safekeeping measures are very strict."
"Is the key to room 207 still there?"
Sun Yuefen took out four keys from her pocket and put them on one. "Yes, I heard from director Wang, so I brought the keys by the way. There are four keys in all, including director Ma's one, which is exactly five."
Han Bin handed the key to Bao Xing, "go and see if you can use it."
Bao Xing took the key and ran away.
Han Bin asked, "director Sun, do you have any staff on duty in your general affairs office during your vacation?"
"Yes, the general affairs department is in charge of a lot of things, no one can't. There are usually one or two people on duty. "
Han Bin nodded. As Ma Tao said just now, there are many departments in the school, and each department has a different division of labor. Most of them have employees left behind, which is not easy to count.
"Ding Ling Ling..." At this time, Han Bin's mobile phone rang.
Han Bin took out his mobile phone and saw that a strange number was displayed on the screen.
"Hello, this is Han Bin."
"Captain Han, I'm Ma Tao. I'm here in the administration building. Principal Chen Huafeng, who is on duty at the school today, heard that you came to the school to investigate the case. He also wants to see you."
"Well, I have something else to do. When I'm finished, I'll go to the administration building."
After explaining the situation, Han Bin hung up his mobile phone.
Wang Jinliang said, "Captain Han, what can I do for you to go to the administration building?"
"Principal Chen Huafeng asked me to meet him."
Wang Jinliang advised, "Oh, you go quickly. We'll just wait for the policeman Bao here."
Sun Yuefen also echoed, "Captain Han, please go. We'll wait here."
Han Bin nodded, "that will trouble you two."
"You're welcome."Han Bin sent a message to Bao Xing to explain the situation, and then went to the administration building with Guo Tianxu.
Headmaster Chen Huafeng looks about 50 years old, with a gold rimmed glasses and a faint smile on his face. He has a kind of bookish temperament and looks very enthusiastic when he meets Han Bin.
"You are captain Han. You are so young and promising. Please come in." Chen Huafeng leads Han Bin into the office and asks them to sit on the sofa.
Chen Huafeng's office is very simple. The most impressive thing for Han Bin is that there are a lot of books. The two cabinets are filled with books, and there are two stacks of thick books on the desk.
After introducing each other, Ma Tao left the headmaster's office. There were only three people in the room, Han Bin.
"Captain Han, I've heard from director Ma about the general situation. If you need anything, just say it. The school and I will try our best to help."
"Thank you." Han Bin is not polite, open to the mountain road, "I want a list of your school on duty during the vacation."
Chen Huafeng frowned slightly, "is it limited to the teaching and research building, or the list of all the personnel on duty in the school?"
"A list of all the people on duty at the school."
Chen Huafeng sighed, "the school vacation time is relatively long, each department has its own arrangements and responsibilities, and there are more personnel on duty. This is a big project."
Han Bin said, "it's because it's not easy. That's why I'm bothering you. If it's a small matter, I'll ask director Ma and director Wang to help me deal with it."
"OK, I'll let you know and ask all departments to report the names of the people on duty, but I'm afraid it will take some time."
"It doesn't matter. When it's ready, just contact me."
"Yes." Chen Huafeng answered, "do you have any other requirements?"
Han Bin pondered for a moment, "does your school employ people with criminal record of stealing?"
Chen Huafeng said firmly, "no, our school teachers' academic qualifications and backgrounds have to go through strict examination. If we really want to have criminal records, we will not use them."
Han Bin explained, "I mean not only teachers, but also other staff, such as cleaners, security guards, kitchen, etc. all the staff working in the school are included."
Chen Huafeng scratched his chin, "this I don't really know. "
"Please check it for me."
Chen Huafeng nodded, "no problem, I'll ask the personnel department to help with the investigation."
Han Bin's words changed, "has your school ever had a theft case before?"
"How do you say that. There are a lot of students in the school, and the situation is complicated. It's inevitable to steal, but it's the first time that the teacher has been stolen. "
"How did the male teacher get here?"
"Body donation."
Han Bin suggested, "I need a male general teacher's information."
"This is no problem. I'll ask director Ma to send it to you later."
Han Bin asked a few more, did not ask out more clues, left.
Just out of the administration building, I saw Bao Xing smoking at the door.
Bao Xing choked out the cigarette and came over, "team Han, Sergeant Guo, I tried to open the door with my key. All four keys can open the door, and they should be original keys, no problem."
"When I came back, I met director Sun of the general affairs department and gave her the key back."
Han Bin nodded, "are the people from the technology department here?"
"Here we are, investigating the scene."
Han Bin returned to the storage room on the second floor of the teaching and research building. There were three people from the technology department, led by Ma Xiwen. He looked like he was in his thirties, with a thick eyeglass frame, and was already bald.
"Margo, have you found anything?"
Ma Xiwen pushed his glasses with his elbow. "There were no obvious footprints on the scene, but some fingerprints were collected, ready to take them back for comparison."
"In addition, we have extracted the antiseptic solution from the pool and will take it back to test the ingredients."
Han Bin thought for a while and said, "some surveillance videos in the school can only be stored for half a month, but the suspect stole a month ago. Can you try to recover the previous videos?"
Maxi Wen pursed his lips. "Let's try it, but it's not likely to recover, and the clarity of the video will also have a certain impact."
"Hard work."