Profiler 2: Criminal Investigation Brigade

These two youths were noticed because it was still a hot day, and they were not celebrities, and they were covered tightly, wearing hats and masks.But also because of this, no one can see their appearance clearly.

After returning, the physical evidence tested the nail gun, and sure enough, as Jiao Yang guessed, no fingerprints or other personal items were found.

This means that, apart from the nail, there are still no clues of evidence, and no clear witnesses.It is even hard to say whether these two young men are the murderers, and the case is difficult to solve.

Even though they knew it was difficult, the police force could only seek a breakthrough from the only clear evidence, the nail gun.

After inspection and analysis by relevant experts, this nail gun is very ordinary, and it belongs to the "Wanbao" brand produced by a large state-owned enterprise.This kind of gun sells well all over the country, and the sales volume starts at hundreds of thousands, so it is basically meaningless to trace it.

Moreover, after reviewing relevant data, it was found that even though Shencheng is not a heavy industrial city, because this kind of nail gun belongs to construction engineering equipment, there are still as many as 300 to [-] nail guns of this type in the city, distributed to [-] people in the city. Many types of business units.Most of them are subcontractors of real estate units, which means that when used on construction sites, there are many people who can come into contact with them, and the product flow is complicated.

Although since 2011, various provinces and cities have successively required the registration of the purchase and use of nail guns.However, in the actual use process, because the circulation is too large, there are actually many regulatory loopholes.Even today, it is still possible to buy modified, modified, shot, nailed, and highly lethal guns on the Internet at random, which poses a great security risk.

Fortunately, it is precisely because of the phenomenon of modification that this gun has some characteristics: the barrel, butt, trigger, etc., all have welds that are visible to the naked eye.

According to the analysis of the mechanical experts commissioned by the task force, the model of this nail gun should have been used in electrician plumbing and building decoration.

Jiao Yang said: "But the modification of this nail gun is to make it have the power closer to the real gun, and it does not seem to be for actual work needs. This level of modification is seriously illegal. Then, either two The murderer himself is a worker in a related industry and has access to electric welding machines; or, he has a relatively close relationship with people engaged in these occupations."

Next, the task force mobilized the police force to carry out continuous investigations on nail guns in related industries in Shencheng City.

However, there are a large number of workers in the above-mentioned industries who have access to nail guns at will, making it extremely difficult to investigate.

However, the circumstances of the case are serious, and it is a serial series of cases, which has extremely bad social impact.Jiao Yang knew very well that the pressure on police stations at all levels was even greater, and no matter what, the special case team could only face up to the difficulties and go up to investigate.

After a week of searching, I finally found something unexpected.

On August 8, a worker in the welding workshop of an industrial equipment installation company in Shencheng came to the Jiangcheng District Bureau to report the situation.

After Hou Xiyong finished asking, he came back happily and said: "Boss, this worker named Jiang Limin came to report. He said that he welded the butt and barrel of this nail gun. The one who asked him to weld this gun is Their company colleague Wang Shanwei! This Wang Shanwei is suspected of committing a major crime!"

Jiao Yang, who was discussing the case with Lu Yuanli, didn't show any joy. He stood up and said, "He's in the inquiry room, right? I'll go over and have a look."

Lu Yuanli said, "I'll go with you."

Jiang Limin is in his 30s, wearing a decent lake blue uniform, and tidy up neatly.

"sit down."

Jiao Yang asked, "You modified this nail gun?"

Jiang Limin replied: "No, police officer, I don't have this technology. I am a welder. I don't know how to modify it. I just help people weld it."

Jiao Yang asked: "Then do you know that this kind of private modification is illegal?"

"I didn't know."

Jiang Limin said: "As soon as this comrade said it, I knew it, and I will admit my mistake to you!"

For some reason, Jiao Yang felt that although this person seemed to have a good attitude, he was a bit slippery.Jiao Yang nodded and said: "Then you know now, what do you think is the purpose of this gun modification?"

Jiang Limin said: "I know, it is to increase the impact."

"The stronger the impact, the greater the lethality, and the closer it is to a real gun."

Jiao Yang said: "Not to mention that you are a professional welder, even an ordinary adult should know the danger involved, right? Why do you want to help people refit?"

Jiang Limin smiled embarrassedly, "Officer, Wang Shanwei is a worker of ours. Although we are not in a workshop, we are fellow villagers and we have a good relationship. He said that some packaging equipment is so hard that nails can't be driven in. I didn't After thinking so much, I helped him change."

That said, it makes sense.Jiao Yang said: "Then when did you refit him?"

Jiang Limin said: "About two months ago, I can't remember the specifics. It was because our colleagues visited our unit, and the leader arranged for the team leaders to ask questions, and I remembered this. Come."

Two months ago, the first incident occurred. The old man who was exercising in the morning was killed more than a month ago. , is quite consistent.

Jiao Yang said: "Then is there anyone who can confirm what you said?"

Jiang Limin said: "When I was doing welding, many colleagues were there. It was more than two months ago, and I may not remember them all. You can ask them more."

Jiao Yang nodded and said, "Okay, thank you for providing the information, we will verify it as soon as possible."

Yu Xiaoguang helped Jiang Limin go through the formalities, Hou Xiyong came out, and asked Jiao Yang in a low voice, "Should we detain this man?"

Jiao Yang said: "What reason is there for detaining it?"

Hou Xiyong said: "There are two criminals. When you analyzed the case, you said that the murderer either welded it himself or hired an acquaintance to weld it. Listen to him, and many co-workers know about it. This person, who Do you know if you are afraid of being reported and exposed, so you should report the situation yourself first, and pretend to be actively testing the water?!"

"You're right." Jiao Yang said, "But it's not enough to directly detain the reason. You go through the formalities first, and find two colleagues who don't look good to follow him. For the rest, wait until the three cases are found out. Let’s talk about whether he has an alibi! Then, you and Yu Xiaoguang take a group of people and go to their unit to check. Find these workers who Jiang Limin said, and confirm the welding situation at that time, and then focus on checking this Wang Shanwei he said!"

"Good head!"

Hou Xiyong took people to the equipment company to do some investigation. The 25-year-old Wang Shanwei is not tall this year, only about 1 meters, which is more consistent with the appearance and height of the suspect who was reported by the public that day.

Wang Shanwei has no criminal record, and there is no major problem with his usual work performance, but he likes to steal and play tricks, often arrives late and leaves early, and is not serious.Then, the investigation found that on the night of the incident, Wang Shanwei, who was also on shift three, was off duty.

Moreover, for the sake of cheapness, the rental house he shared with another worker was just in the period of demolition, and the property had already been evacuated, so there was no monitoring at all.Wang Shanwei's roommate happened to be on the night shift that night and left after 11 o'clock.Their rental house is not too far from the scene of the incident.In other words, in the case of Li Qiangguo's murder, Wang Shanwei had the time to commit the crime.

Although Wang Shanwei was on duty during the estimated time of the other two cases, there were two suspects in these three cases, which cannot be ruled out. The first two cases were committed alone.

And, as a worker in the assembly workshop, others can attest that Wang Shanwei can skillfully use a nail gun.Their squad leader also reported a situation. Wang Shanwei once entered and left the workshop during working hours in violation of work discipline because he was late and left early, and had two conflicts with the company's security department.This is also in line with Lu Yuanli's previous speculation, that is to say, Wang Shanwei is highly suspicious.

In the afternoon of the same day, Wang Shanwei was taken back to the bureau by the task force for questioning.

At this time, nearly ten days had passed since the incident occurred, and the Municipal Bureau repeatedly asked about the progress of the case, demanding to solve the case as soon as possible.

Of course Jiao Yang was under a lot of pressure, but he still strictly followed the procedures and refused to use any extraordinary means.

No matter how you ask, Wang Shanwei has only one sentence: "I was sleeping at home by myself, I never did it! If I didn't do it, I didn't do it. If you have the ability, beat me to death!"

Originally, Hou Xiyong didn't want to do anything, but after more than ten hours of continuous interrogation, this person kept repeating this sentence, which made him feel anxious and irritable.

Hou Xiyong looked at Jiao Yang's absence for a while, rolled up his sleeves, and motioned to Yu Xiaoguang: "I turned off the surveillance, you go out and watch!"

Yu Xiaoguang was startled, and leaned into his ear and said, "What do you want to do? Let the head know that you won't be killed! He hates this the most!"

Hou Xiyong shook off Yu Xiaoguang and said, "Didn't you see the city bureau come to remind you?!"

"This one……"

Yu Xiaoguang hesitated for a moment, but went out anyway.

Hou Xiyong copied a thick book, reached out to pick up Wang Shanwei and said, "Come on boy, let me help you remember what you have done!"

Wang Shanwei was startled, and tremblingly said: "You...what do you want to do!"

Hou Xiyong put the book on Wang Shanwei's body and punched him.

Wang Shanwei was handcuffed and saw that there was no place to hide. He was about to call for help when Hou Xiyong's wrist was twisted.

"Didn't I tell you to go out and watch people..."

Hou Xiyong thought it was Yu Xiaoguang who had come back timidly, but when he turned around and saw Jiao Yang's tall figure, his heart suddenly felt empty, "Boss..."

With a sullen face, Jiao Yang motioned for Yu Xiaoguang, who was also a little trembling, to send Wang Shanwei back to the cell.He told Hou Xiyong to go to the safe passage.

Jiao Yang took out a pack of cigarettes, handed him one, and said, "It was Li Ju who was urged by the city bureau, and it was me who was urged by Li Ju. Did I urge you?"

"No……"

Hou Xiyong took the cigarette, but didn't smoke it, he just held it in his hand and said, "But head, we know you're under a lot of pressure!"

"No matter how great the pressure is, you can't use this method."

Jiao Yang said: "It's not the 90s or [-]s anymore. Many things are gradually being standardized and on the right track. We have to keep up with the situation and keep pace with the times. We can't go back. The use has long been proven and caused countless injustices." The method of false and wrongful convictions is used to solve the case!

According to the file, some workers reported that the relationship between Jiang Limin and Wang Shanwei was not good. The two had conflicts several times because Wang Shanwei came late and left early when they were in a hurry.Jiang Limin himself said that he and Wang Shanwei are fellow villagers and have a very good relationship.Did you notice this?Think about it! "

Jiao Yang suppressed Hou Xiyong, and as soon as he returned to the office, Zhang Xianning came over with a solemn expression and said, "Again! Director Li asked you to come over!"

On the way, Zhang Xianning briefly explained the new case to Jiao Yang.

Last night, two gangsters attacked the staff on duty at an English tuition school. They also hit the head with a nail gun. After the security guard was shot, he destroyed the surveillance system and looted his property.

However, this time, the gangster finally made two mistakes.