I have been in the crime team for these years

Chapter 24 Reasoning Established
Gao Qiang continued: "In this way, Lan Zaihui was poisoned to death by the high concentration of carbon monoxide produced in the sealed bathroom before he could wait to wake up, so it was faked that he died of carbon monoxide poisoning due to taking a bath. "

"Gao Dui's deduction is correct." Ren Tianya interjected, "The weather is not too cold now, there is no way that Lan Zaihui would close the window so tightly when taking a shower, otherwise he would have had an accident."

"Xiao Ren's analysis is very reasonable! I said that Lan Zaihui is so young and strong, why does he have to close the doors and windows so tightly before taking a bath in winter?"

"I thought about this problem at first, but I really didn't expect that the murderer would kill in such a clever way without leaving any traces."

"Ashamed, we old detectives are not as good as Xiao Ren, a young man who just arrived in the criminal investigation department."

All the police officers nodded and looked at Ren Tianya with admiration.

Ren Tianya waved his hand with a smile and looked at Gao Qiang: "Actually, Captain Gao has discovered the problem a long time ago, but he was busy dealing with other things, so he didn't take a closer look at it for a while."

This is of course a modest compliment.

"You kid, don't compliment me here." Gao Qiang pointed at Ren Tianya, laughing, "To be honest, I really didn't think of this level just now. The waves behind the Yangtze River push the waves ahead! Xiao Ren, you He is really a genius in our police circle, a future detective."

Ren Tianya laughed and said, "Captain Gao, don't rush to praise me, it's better to investigate the alley behind to see if our deduction is correct, and then check the surveillance to find the murderer."

"This is necessary." Gao Qiang waved to the two police officers beside him, "You two go to the back alley to see if there are any clues of climbing."

The two police officers quickly walked out of the room, went downstairs to the back alley, and took out various survey tools to conduct a careful survey.

Ren Tianya and Gao Qiang leaned against the bathroom window and watched the two police officers search.

"Report to Team Gao, there are obvious signs of climbing on the sewer pipe." A police officer carefully inspected the sewer pipe with a magnifying glass, and raised his head to report to Gao Qiang standing in front of the bathroom window.

The surface of the sewer pipes will be covered with dust and stains. If someone grabs and climbs, it will leave obvious marks. Even if you want to completely wipe it off, it will be difficult.

"See if you can extract your fingerprints." Gao Qiang stood in front of the window with his hands behind his back and said to the police officers below.Then he looked back at Ren Tianya with an admiration on his face, "It seems that your reasoning is completely correct."

The police officer took out some powder and some reagents from his backpack and began to extract fingerprints from the obvious scratches on the sewer pipes.

"Guy Gao, the fingerprints cannot be extracted. It is estimated that the criminal wore gloves. However, judging from the size of the palm print, the criminal should be less than 1.7 meters tall." After some experiments, the policeman raised his hand and reported the results to Gao Qiang.

In fact, this result was expected by Gao Qiang and Ren Tianya, but the investigation procedure still had to be carried out.

"Team Gao, the footprints have been extracted. He is wearing a pair of pull-back shoes with a shoe size of 39. He is estimated to be between 1.6 meters and 1.7 meters tall and weigh between 130 and [-] kilograms."

Another police officer reported to Gao Qiang upstairs after collecting footprints under the sewer pipe.

Relying on the length and depth of footprints to infer a person's height and weight, this can only serve as a rough reference value, and it is not very accurate.

Immediately, the police officer began to climb the sewer pipe. Although it was more strenuous, he successfully climbed to the bathroom window on the second floor in less than ten minutes.

This is a test that proves that criminals can indeed climb from the sewer pipe to this window.

"Well, well, carry the body back and close the team."

Two police officers and the forensic assistant carried the body out, went downstairs and loaded it into Forensic Doctor Liu's car.

Gao Qiang and other police officers left the room, went downstairs, got into a police car, and rushed towards the Wandong Sub-bureau.

Back at the police station, Gao Qiang immediately transferred the surveillance video of the alley behind the rental house to see who passed the alley at the time of the incident last night.

There is no monitoring in the alley facing the bathroom of the rental house, but there are exits on both sides.

Check the flow of people entering and leaving on both sides, and check the time of entry and exit.

Generally speaking, no matter which side it passes by, it will pass by the surveillance camera on the other side in at most tens of seconds.After all, the road section without cameras in the middle is only a few tens of meters away.

At about eleven o'clock in the evening, a man in black and a mask entered from one end of the alley, and then did not come out from the other side of the alley until after twelve o'clock.

"It's him." Gao Qiang pointed the screen with his fingers, and said to Ren Tianya who was sitting next to him with a determined face, "It seems that your deduction is completely correct."

The forensic doctor judged that the time of death of the deceased was between [-]:[-] and [-]:[-] last night, which coincided with the passing time of the man in black.

Moreover, despite the distance of tens of meters, it took him more than an hour to come out from the other side, which is enough to explain the problem.

Ren Tianya rewinds the surveillance video and pauses it, and clicks to enlarge it.But because it was night, and the man was wearing a mask and walking with his head bowed, it was impossible to take a picture of the man in black.

It can only be inferred from the reference object next to it, the height of the man in black is estimated to be less than 1.7 meters.

"Xiao Ren, what do you think?" After turning off the surveillance video, Gao Qiang leaned back on the chair, took a sip of water from his teacup.

If it was luck that Ren Tianya caught the robbery murderer last time, then this time Ren Tianya quickly deduced the case of Hui Zaihui's murder, which made Gao Qiang really look at him with admiration.

Gao Qiang has been engaged in criminal investigation for more than 20 years and has solved countless major and minor cases. He is rich in experience, but he did not realize that Lan Zaihui actually died in this situation.

Ren Tianya said: "Obviously, Lan Zaihui's murder must be related to the jewelry robbery. From the comparison of body size, Lan Zai Hui agrees with the tallest robber in appearance, and the man in black who murdered Lan Zai Hui also Similar to the other two robbers."

From the surveillance video in the alley, there will be a big difference in height, so the man in black may be the robber who is about 1.6 meters five, or he may be the robber who is about 1.7 meters.

Gao Qiang pondered: "That's right, I think so too. The robbers had two purposes for killing Lan Zai Hui. The first is to kill people and silence him, cutting off the clue of Lan Zai Hui so that it is difficult for the police to find the other two. Robber's clues.

The second is that they have internal strife with each other, competing for the stolen jewels. "

Just as he was talking, a police officer came in and reported to Gao Qiang: "Team Gao, through surveillance and interviews with people, we have found the whereabouts of the robber's van and brought the owner back to the police station."

"Where is the owner of the car now?" Gao Qiang lifted his spirits and stood up.

The police officer said: "Already in the summons room."

"Come on, follow me to have a look." Gao Qiang beckoned to Ren Tianya, and strode out of the criminal investigation department.

(End of this chapter)