Guan Feng glanced around and noticed that there was one permanent staff member and two contract workers on duty each day.
Guan Feng pointed to the duty roster for the past three days and asked, "Director Zhang, are you sure it's these nine staff members? What if there are any last-minute, unauthorized shift changes?"
Director Zhang said, "We have a work group. If there is a need for shift changes, we will communicate in the group. I just checked and no one has changed shifts in the past three days, which means it is these nine people. Of course, you can ask them for more details."
Guan Feng nodded and asked, "What do the staff on duty need to do?"
Director Zhang said, "Generally, we need to do regular inspections. Our reservoir pumping stations need to be inspected and maintained regularly to prevent pump tripping. Therefore, someone needs to be on duty every night. At the same time, we also need to pay close attention to the reservoir water level to prevent the risk of sudden flooding."
"The rest is much simpler. We conduct water quality tests three times a day, morning, noon and evening, because our water is pumped to the water treatment plant, and the water quality must be up to standard. We control the source to prevent pollution."
Guan Feng nodded.
He finally understood that these tasks were just routine patrols and inspections, with no technical content whatsoever.
He asked, "Regarding the three people who drowned in the reservoir, two of whom have not yet had their bodies found, Director Zhang, you are the person in charge of the reservoir. It has been two or three days since the incident. What are your guesses?"
Director Zhang thought for a moment and said, "Captain Guan, to be honest, I suspect that someone is deliberately causing trouble."
"Deliberately causing trouble?"
Guan Feng asked, "What do you mean?"
Director Zhang said, "The first child drowned, and we have found the body. But we have searched for so long and still haven't found the bodies of the other two. I suspect that they may not have come to swim at all, and that these two families are deliberately causing trouble."
Guan Feng cautioned, "According to the clues we have, both of them told their families they were coming to swim, but they never went home after arriving."
Director Zhang said, "That doesn't prove they came to the reservoir, does it?"
Guan Feng said, "According to the surveillance footage we retrieved along the way, the other party did go up the mountain, but the surveillance footage after they went up the mountain was taken by your reservoir management. Your surveillance footage is missing, and you have lost the most powerful piece of evidence."
Director Zhang sighed, "Isn't it strange? The surveillance cameras broke down just last month. We applied to the higher authorities and they said they would come to replace them in a few days. But this kind of thing happened at this critical moment. I'm starting to suspect that someone is deliberately sabotaging us."
Guan Feng asked, "Director Zhang, normally, surveillance cameras don't break down easily. It's perfectly normal for a camera to last three to five years. Have similar situations occurred before?"
Director Zhang shook his head and said, "The problem lies here. These cameras are five years old. We wanted to replace them last year, but last year the water level of Hongcheng Lake was at a record high. Everything was put aside for flood control, so we didn't have time to replace them. As a result, we haven't had time to replace them this year, and this incident has happened."
Guan Feng nodded, his unease growing stronger.
Nothing more!
This is a kind of criminal investigation intuition.
Based on his long experience handling cases, he was told that this matter was most likely caused by human intervention.
He asked a few more questions, and after confirming that there were no oversights, he said to Director Zhang, "Alright, thank you in advance, Director Zhang! I hope you will keep my questions confidential, otherwise, if they are leaked, it will not only affect the investigation, but also have a negative impact on you, Director Zhang."
Director Zhang said, "I understand, I understand. I also want to apologize for my behavior just now. I hope Captain Guan won't hold it against you."
Guan Feng waved his hand and said, "That's all in the past."
Director Zhang nodded and walked out.
Liu Shengguo asked, "Captain, shall we question the next person?"
Guan Feng didn't answer, but instead dialed Hu Mingfa's number and asked, "Old Hu, where are you now?"
Hu Mingfa said, "I'm here with some people inspecting the reservoir."
Guan Feng asked, "Do you have backups of the video surveillance footage that you mentioned in the case file?"
Hu Mingfa said, "Yes! You need it? I'll have someone from the institute bring it over right away."
Guan Feng nodded and said, "Okay, have someone send it over. I need it urgently."
Hu Mingfa said, "I'll make the call right now."
......
Fifteen minutes later.
A police officer from the Chengbei Police Station handed over the surveillance video.
Guan Feng took the video and began to review it.
These videos are all of people going up and down the mountain.
There are many videos of the reservoir, but there is a lack of surveillance footage showing the swim from the top of the mountain to the steps leading into the reservoir.
Guan Feng opened the folder and found that the videos had been divided into three folders.
The child's video was in the first folder. According to the monitoring time, it was 7 pm three days ago when he came to swim and play with his friends. As a result, the drowning incident occurred. Several friends immediately went down the mountain to seek help from their parents, but when the parents arrived, the child had already been completely submerged in the water.
The reservoir management also received the news and began the salvage operation.
The child's body was finally found at 1 a.m.
The second video is somewhat dark.
However, the surveillance footage has night vision capabilities, so the images captured are relatively clear. Around 9 p.m., a figure was seen walking up the mountain in the dark.
Guan Feng recognized him at a glance as the missing person, Shi Hui!
The Chengbei Police Station had previously investigated and found that the man was fifty years old and loved swimming. He would go swimming in the water regardless of the season, especially in the summer when he would swim in the reservoir almost every day. However, the surveillance footage showed that he was present when going up the mountain, but he never appeared when going down the mountain.
This is also why the other party's family is certain that Shi Hui drowned in the reservoir.
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