Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

The relevant information was quickly reported to Lu Chuan.

fingerprint……

Lu Chuan thought for a while and said, "Regarding the fingerprint situation, you can contact the property management first and see if they have hired a maintenance worker to repair these pipes. No matter when, whether it was recently or in the past one or two years, no matter when, as long as they have asked them to check the situation."

ten minutes later.

Wang Zhaokai came to report: "Three months ago, the property company had someone inspect this ventilation duct. I have asked someone to collect the fingerprint information of the person who inspected the ventilation duct at that time, as well as DNA information, to see if it can be compared with what we found."

"Okay, let's eliminate as much as we can."

The investigation of the entire case has now reached a dead end. None of the clues found so far can directly identify the suspects as the fingerprints and hair found in the ventilation duct.

But just as Lu Chuan was worried, if there was indeed someone else in the pipe, such as the repairman hired by the property, then there is a high possibility that the other person left fingerprints inside.

The inspection of the ventilation duct soon produced results.

The ventilation duct on the roof where people were found entering and exiting is the main ventilation duct of the entire building, connecting all the rooms below the ventilation duct.

We discovered this problem during our investigation, which means that all the ventilation buttons in the rooms need to be searched.

"The ventilation holes in the office should be relatively small. Can they accommodate one person in and out? I think we should check the ventilation ducts. Some of the ventilation holes at the door must be relatively large, and some are relatively small."

Wang Zhaokai felt that it was unnecessary. He had also observed that the ventilation holes in these offices were relatively small.

Even so, the workload is relatively large, and the pipeline robot moves relatively slowly. According to the requirements of Lu Chuan and his team, the pipeline robot must screen all ventilation ducts where people can enter and exit. It is estimated that this work may not be completed in about a day.

At the same time, the investigation centered on Tang Meijuan is also gradually progressing.

The engineering company where Tang Meijuan works.

"Tang Meijuan has worked in the company for a long time and is considered a veteran. Although he is not very old, he was there when our company was founded, when we were still working in the Yuanfang Building. He is someone our boss trusts very much."

"Tang Meijuan is usually a low-key person, and she gets along well with her colleagues. However, I don't know Tang Meijuan very well because I am often away from home and she is a cashier. We basically don't have any contact and only know each other at dinner parties."

"I am the accountant and they are the cashier. We have been partners for a long time, but I came later when the original engineering company was smaller. At that time, she was the only one who served as the accountant. We worked well together, and she is a more easy-going person."

Inside the engineering company, Wang Zhaokai sent people to find out all the details about Tang Meijuan.

"Do you know if Tang Meijuan has a boyfriend or a close male friend?" "I haven't heard of this, and I'm not sure, but she probably doesn't have a boyfriend. When we go out to the movies and eat, I don't see her interacting with other men much."

"How is the company's recent engineering cable connection and revenue situation?"

"It's pretty good. Our company has taken on several large projects this year, and the profits are pretty good. The company should have made a lot of money in the past two years, otherwise we wouldn't have been able to move from that bungalow to the Yuanfang Building. The company is now growing and developing. We used to have very few people, but now the office is basically full, but we usually have to work outside and not inside the building."

The engineering company learned that Tang Meijuan's situation was not particularly special. Tang Meijuan was usually a kind person and had a good relationship with everyone. No one had heard that she had any grudges against anyone, nor had she heard that she had any financial problems.

That afternoon, the police found the friend who had contacted Tang Meijuan on the day she committed suicide, and the two of them made an appointment to have dinner in the evening.

"I didn't notice anything unusual. Meijuan's tone when she called me was no different from usual, and we discussed for a long time what to eat in the evening. She couldn't possibly commit suicide. If she wanted to commit suicide, she wouldn't agree to go out with me in the evening, and she wouldn't discuss what to eat for such a long time."

"Then do you know who her friends are, or if she has anything special going on recently, has she mentioned it to you?"

"Friends... Meijuan is a bit introverted, usually low-key and not talkative. As far as I know, some of the friends we often come into contact with are college classmates, but everyone is busy with work, so it's hard to get together. Sometimes they just go out in pairs to have a meal or sing a song."

"Meijuan doesn't have any friends of the opposite sex except classmates. She used to have a boyfriend, but it was a long time ago. They broke up two years ago, and I haven't heard of her having any boyfriends since then... Other abnormalities..."

"Oh, by the way, when I went out to dinner with Meijuan last week, she asked me about the BMW. She said she wanted to buy a car and asked me which car had better performance, the BMW or the Audi?"

Buy a car?

Sun Biao asked: "Has Tang Meijuan bought a car before? Or is she going to buy a new car, or is this her first time buying a car?"

"The first time she bought a car, she had passed the driving test in college, but after she started working, her salary didn't seem to be very high, so she never bought a car. She didn't even buy a house, she rented one, so I told her that time, if you have money, buy a house first."

The girl paused and said, "Oh, yes, now I remember. When she talked about the house, she said that she would have a house by the end of this year. She would buy a car first. She saw one of our classmates, the former beauty in our class, who is now jobless and married to an older man. She drives a red BMW and always shows off to us at our gatherings."

After recording the relevant information, he also asked some other questions about Tang Meijuan's personal habits.

At the same time, the fingerprint screening finally confirmed it.

The several fingerprints found in the ventilation duct were all from the worker who came to repair it three months ago.

The fingerprint clue ends here, and it is considered broken, including the several fingerprints found by the pipeline robot in the ventilation duct, which also prove that they are pipeline maintenance workers. (End of this chapter)