Compared to the entire inspection process, the time taken to extract the sample from the detonator tube is not long. Pen, fun, pavilion www. biquge。 info

It only took about ten minutes before and after, and immediately after the extraction, I went to the DNA laboratory for experiments. The first time it was not detected, it was returned to the temporary laboratory where the detonator was placed and extracted again, and so on until more than 11 o'clock in the evening.

It is easy to do things with money, and from half past 6 in the evening, the urgently purchased trace inspection instruments and equipment have been delivered one after another.

Cui Ju did not sit back and wait, and together with the chief of police security, the political commissar of the detachment Xin and the instructor of the technical brigade Wei Shaowen and others, he commanded the technical police to pack out two offices, place instruments and equipment worth more than 4 million yuan, and ask after-sales service personnel to debug on site.

It is said that it is a demonstration of debugging, and the person who will operate it is extracting and testing the DNA on the detonator, and such an expensive equipment is not bought back as a decoration, and it must play a role as soon as possible, and it is best to find out whether there are chlorine-acid-potassium, nitroammonia, t-n-t and other explosive residues in the samples collected from the Xinyuan community before dawn.

The people who sell these instruments and equipment, especially those who engage in after-sales service, are all "experts", and they go to major research institutions across the country almost every day. Han Bo is doing his fifth experiment in the DNA lab, and the results of their test came out first.

"Yungong, are you sure that there are no explosives in the dozens of samples?"

In the past, I only thought about running to the Chinese Academy of Sciences and the major colleges and universities with deep pockets, but I never thought of going to the public security bureau, but the Nangang City Public Security Bureau actually came to the door and purchased a set at once.

Doing such a big business, staying up late is really nothing.

Yun Zhixin was tired and happy, and held his glasses: "Director Cui, there are explosives left, otherwise how could there be an explosion." However, only trace residues of air conditioning refrigerant were detected, and no other residues such as chlorine, acid, and potassium were detected. ”

Not only is he a master's degree like "Han Strike", but he has also taught at a famous university in China.

He not only sells these imported instruments and equipment, but also helps train the technical police on how to inspect and analyze and how to maintain the instruments and equipment in accordance with the terms of the contract.

He said that if there is no, there will be no basics.

The absence of man-made bomb residues indicates that the quality inspection department has no problem identifying the cause of the explosion three years ago, although the two explosions cannot be combined, at least it can be determined that there has been only one bomb so far.

Cui Ju breathed a sigh of relief and beckoned the comrades of the Police Security Department to accompany the experts to have supper, and after eating supper, he sent people to the hotel to rest. After the on-site investigation of the infrastructure construction site of the offshore engineering group, the technical police have no particularly important tasks in the future, and while the experts are in Nangang, they will be organized to receive training from tomorrow.

All arrangements are in place and the task force will be informed.

As soon as the call was made, and I was about to report to Chen Ju, who was waiting for news, the door of the DNA laboratory opened.

"Xiao Han, how is it?"

"I didn't disgrace my mission, and I finally checked it out, there was only one person, and there was no second person. Han Bo handed over a map and sat down on the ground against the wall, relieved.

"Good, good, great!"

Cui Ju was so excited that he couldn't recover, and he clutched the atlas and laughed: "The detonator is not RMB, it's too late to hide, who will touch it with their hands if they have nothing to do?" It is definitely a suspect's, it can only be a suspect's. This is a breakthrough, Xiao Han, your danger is not in vain, and you should be the first to solve the case!"

"It doesn't matter if you make meritorious service or not, the key is to solve the case. ”

Wearing dozens of kilograms of EOD suits, and working for more than ten hours with full concentration, Han Bo was really tired, took a small sip of water from Li Jiaqi's hand, and said weakly: "Cui Ju, from now on, as long as the blood sample of the suspect is sent over, it will be tested and compared immediately." ”

"Yes, it's important to solve the case, you hurry up and rest, there are a lot of suspects, and you have to be busy next. ”

"I insisted until dawn, and asked Dr. Tian to come over early tomorrow morning to help, and from tomorrow I worked two shifts, and people stopped the equipment until the suspect was compared. By the way, Cui Bureau, we don't have a DNA database of ex-offenders, the Donghai City Public Security Bureau has, it's not too far away, if the suspect has been to the East China Sea and has a criminal record in the East China Sea, then we can compare him as soon as possible. ”

"This proposal is good, I immediately arranged for someone to bring the inspection report to the East China Sea, and asked the colleagues of 703 to help compare. ”

To report to the headquarters of the special case group, to report to Bureau Chen, and to ask Deputy Director Tan of the Criminal Investigation Bureau of the Provincial Department to help coordinate, Bureau Cui was very busy. Chen Ju connected the phone, and after saying a few words, he stuffed the mobile phone into Han Bo's hand, and went out to arrange for someone to prepare a car to go to the East China Sea overnight.

"Xiao Han, well done. In view of the seriousness of the case, there is a problem that must be clarified, the detonator tube has the suspect's DNA, but the detonator tube has not exploded but has experienced an explosion, and it is not known how long the bomb was made, and this test result is now a clue to solve the case, and will be the basis for conviction and sentencing in the future......"

Chen Ju was very excited, and his speech was a little incoherent.

Han Bo basically understood what he meant, and explained: "Chen Ju, the structure of DNA is relatively stable, and the degradation rate is extremely slow under normal circumstances. The only factors that can affect it are temperature, humidity, pH, oxidation, enzymatic hydrolysis and microbial infection.

The detonator we were looking for at the scene had indeed experienced explosions and high temperatures. However, the short-term high temperature mainly causes the denaturation of DNA, that is, the DNA double-stranded disintegration becomes a single strand, and after the temperature drops, it will return to the double-stranded form. The reason why I delayed the extraction test this afternoon is to allow it to fully recover its double-stranded form. ”

"You thought of extracting DNA from the detonator?" Chen Ju reacted.

"Yes, from the moment the detonator was found, I wanted to extract it for testing. Considering the danger of extracting samples from failed detonators, it was decided to allow sufficient time for the suspect's DNA that might be present on the detonators to return to their double-stranded form, and then extract and test them in one fell swoop. ”

I had planned to extract and inspect the Xinyuan community, including the instruments and equipment for micro inspection, and it was not so urgent at all.

I was fooled and was cheated out of more than 4 million funds by this stinky boy!

Chen Ju was so angry that his teeth itched, but he couldn't criticize a hero who had just made great contributions to the investigation of the case by risking his life, and secretly decided not to approve any application report in the next year, no matter how many applications he made.

"It's hard work, arrange for someone to send the detonator to the dangerous goods warehouse, and then seize the time to rest. ”

"Yes!"

……

With the instructor and the deputy captain there, Han Bo didn't need to worry about how to deal with the detonator, so with the help of Li Jiaqi and others, he took off the EOD suit and went to the back dormitory to lie down and sleep.

Cheng Wenming and Jin Yang, who have also been working until now, are still fighting at night in an office of the Development Zone Bureau, sorting out today's materials, and discussing the case with you and me.

"I've seen a few air conditioners today, and it's not very difficult to remove them, just an ordinary screwdriver, no special tools are needed. ”

"Civilized, are you saying that the suspect is not necessarily an air conditioner sales, installation, and maintenance practitioner?"

"There is a possibility that they may also be disguised as installation and maintenance personnel. ”

Cheng Wenming put aside the sorted materials, took out a cigarette and lit it, and continued: "There are only 4 left that need to be checked." Judging from the information provided by the comrades of the sub-bureau, they all have legitimate occupations and none of them have criminal records, so I feel that it is unlikely that he will commit a crime. ”

"Our job is to investigate them, and as long as they are okay, our group is not responsible. "As soon as he cracked a rape and murder case that killed two people, he was transferred to the 01.01 mega explosion case task force, Jin Yang has not had a good rest for many days, he is physically and mentally exhausted, and he looks very haggard.

The opportunity is rare, the Korean Bureau has such high expectations for himself, Cheng Wenming didn't want to go back to Liangzhuang like this, and raised his head and asked: "Jin Dae, what if the suspect is not in the scope of the survey circle delineated by the command for us, but is in the jurisdiction of the Development Zone Bureau?"

"What do you think?"

"Air conditioning is not an ordinary household appliance, unlike televisions, electric fans are available in every household, there are not many people who sell, install, repair and recycle air conditioners in the urban area, and the investigation lasts for more than ten hours. So far, there is no news, which means that there has been no breakthrough in the detection work, at least not in our line.

It is unlikely that the suspect is a professional, but he was able to disassemble the air conditioner and put the bomb inside, which shows that he knows a little bit and has seen others repair or touch the air conditioner with his own hands. Today, I saw some people who installed air conditioners welding cages outside the external unit, for fear that the external unit would be stolen.

Can we start from this aspect and check the case files of all the stolen air conditioners of the police stations and the criminal police team to see if we can find any clues? No one can say for sure about luck, but maybe you can really get a little bit of a gain. ”

The remaining four people who want to find out the platoon go out to work, they are different from the suspects on other lines, especially the two lines of the Offshore Engineering Group and the Second Construction Company, as long as they visit and inquire to determine where they were before and after the crime, there is no need to chase them over and see people.

There's nothing to do next, just check it.

Jin Yang weighed it and agreed: "I will visit tomorrow to inquire, and you know about the theft of the air conditioner." ”

"Okay. ”

At the same time, the "old handsome" was convening a meeting of the leaders of the second, third, fourth, and fifth teams of the task force in the conference room of the traffic police force.

Cheng Wenming Jinyang's eighth group is equivalent to picking up and filling in the gaps, not the main force, and its "status" in the special case group is not high, and the team leader does not need to participate in the case analysis meeting, as long as the materials of the three investigation groups are summarized to the research and judgment group.

"In the past three years, the mobile house has been rented out four times, the first time to the Youth Community Construction Project Department of Donggang Construction Company for about six months, the second time to a bridge building group of the Road and Bridge Company, the third time to the Municipal Engineering Company, placed at the intersection of Qingnian Road and Jianshe Road, and the fourth time to the infrastructure construction site of the Offshore Engineering Group.

Due to the large number of people to visit and inquire, and it was the New Year's Day holiday, I did not find anything unusual for the time being. However, I think the problem is very likely to be during the third rental period, the intersection of Qingnian Road and the construction is the People's Square, and now there is a large flow of people, and there is a lot of traffic during construction, and the suspect wants to create a big explosion to achieve his ulterior purpose, and this is the most suitable place to detonate. ”

The old man took a puff of his cigarette and asked coldly, "How many people do you need?"

"Ten policemen, ten more policemen should be enough. ”

"I will assign 15 to you, ask them overnight, and find them overnight, and as long as they find that they have the motive and time to commit the crime, they will immediately collect blood samples and send them for testing. ”

"Yes. ”

……………………

ps: Mid-Autumn Festival, a few guests came to the house, and it was not updated until now, so I have been waiting for you, sorry.

I wish you all brothers and sisters a happy Mid-Autumn Festival! )