However, when I zoomed in on the image, I found that the car was empty, and the black garbage bag I found at the garbage station was the size of a bucket, and if it was transported by bicycle, it would have been placed in the basket or the back seat of the car, so it was all excluded.

I speculate that the murderer must have dumped the body in the second half of the night, it would be raining heavily, and no one would pass by on the street for a long time, so it was the best time to dump the body. So I patiently continued to watch. At eleven o'clock the road began to get wet, it must have rained, and the cars began to become scarce, and there was not a single car passing by for half an hour, let alone a bicycle.

Until the end of the video at 7 o'clock in the morning, a total of four cars and a muck truck drove into Songhua Street during this process, and did not wait for the bicycle in the deputy's reasoning.

Then he looked at the surveillance of another intersection on the south side of Songhua Street, and it was also useless to find the trace of the bicycle, Sun Jianguo narrowed his eyes: "It shouldn't be, could it be that the murderer flew into Songhua Street with wings?" ”

"Wu Siyou, are there any other alleys on Songhua Street where you can go out?"

Wu Shuangshuang held the brim of his hat and thought for a while, and said with certainty after a few seconds: "No, I have visited the businesses near the garbage station before, and I heard them say that there are only two exits on Songhua Street, and the streets are full of merchants, and there are no alleys that can be entered and exited." ”

"What about the monitoring of Huangpu Road in Jinghai District? How not? ”

"It's a shantytown over there, I went to the traffic police station to inquire, but there is no monitoring installed on Huangpu Road, so I can't get it."

I was also blindsided at this time, and there was no problem with the reasoning of the deputy team, could it be that the murderer did the opposite and drove to dump the body?

"That's not right! Problematic! Since the murderer chose the garbage station on Songhua Street as the place to dump the body, he may have noticed the monitoring of both ends of the street a long time ago, so it is really possible to drive the body to dump the body. ”

Li Jun said thoughtfully, and then gave an order to Wu Shuangshuang: "You go to the traffic police station to investigate the identities of the drivers of the four cars and muck trucks to see if there is any suspicion of committing a crime." ”

Wu Shuangshuang received the order and went out immediately, it was already more than two o'clock in the afternoon, I was already too hungry, I had no desire to eat, the question of how the murderer threw the body was a headache, I thought that the picture of the murderer throwing the body was filmed by the surveillance, and now this clue may be broken again, I am afraid I can only wait for the results of Ma Zhiyuan's side to come out, and look for clues from the victim's interpersonal relationship.

Li Jun spread out a map of Songjiang City and circled two points with a pencil: "Songhua Street and Huangpu Street are 460 meters apart, and the murderer's residence must not be far from these two points, and it is very likely that he lives somewhere in the east of the city." So far, the skeleton and internal organs of the victim have not been found, and it is very likely that they were thrown in an unknown place, and when they are discovered, it will inevitably cause panic among the masses. ”

Sun Jianguo rekindled the half-cigarette that had been extinguished before, and persuaded: "What are you panicking about? Since things have come to this point, as you said, solving the case as soon as possible can eliminate the bad effects. ”

took two puffs, as if he remembered something, turned to me and said, "Xiao Xu, you go and see the situation on Ma Zhiyuan's side, and the result is almost out." ”

Thinking back to the situation I saw at Ma Zhiyuan's side this morning, my scalp was a little numb, but I thought that it would not be less to encounter such a situation in the future, so I responded and prepared to go out. As soon as he walked to the door, the door was pushed open with a bang, and Ma Zhiyuan walked in with a wad of papers.

"Team Li, the results are out."

Li Jun looked at Ma Zhiyuan excitedly and said, "Let's talk about the victim's situation, I just don't have a clue now." ”

"We did a bone age test on the skull, and according to the wear and tear of the teeth, we judged that the victim's age was between 19 and 21 years old, and at the same time, a small chemical sodium hydroxide was found on the skull, which is the trace of caustic soda, and the victim's scalp was not peeled off by the murderer, but corroded by caustic soda, which can also explain the reason why the victim's skull is dark red."

"At the same time, we took multiple sampling and analysis of the minced meat, and determined that all human tissues came from one person, because the corpse was frozen, and the freezing will excrete lactic acid, and the time of death cannot be calculated, so this cannot be determined. The murderer has a certain amount of medical knowledge, and the frozen body will affect the forensic doctor's inference about the time of the victim's murder, so that he can use the time difference to forge an alibi. ”

"The specifications of the minced meat slices in the two garbage bags are surprisingly consistent, more than 98% of the meat slices are 2*1*0.1cm, which gives me the feeling that it is more like a religious ceremony, if it is simply for the convenience of throwing the corpse, there is no need to divide it so carefully." Ma Zhiyuan's tone was also very puzzled when he said this, and he obviously didn't understand why the murderer did this.

"A small amount of trace elements was found in the minced meat, and now the sample is being analyzed as soon as possible, and it will take some time to get the results."

"Finally, we constructed a 3D model of the victim's head, and according to the movement of the facial muscles, we roughly restored the face of the deceased before his death, which is a photo."

Ma Zhiyuan said and handed over a black and white photo and put it on the table, I stretched out my head to see that there was a handsome girl printed on the paper, not very good-looking, but it gave people a very quiet feeling.

Sun Jianguo exhaled smoke, squinted at the photo, frowned for a day and suddenly expanded, slapped the table and shouted, "Okay!" Now immediately send the photos to those who are outside the investigation, ask them to search for them according to the pictures, and post a notice to find the body, so as to determine the identity of the victim as soon as possible. ”

"Xiao Xu, you do this, now that everyone here has been scattered, you are the only one left, this task is very important, and it must be passed on to everyone outside in the fastest time."

I just wanted to leave this place, so I simply agreed, but just as I was about to leave, I heard Li Jun say to Sun Jianguo: "Don't be so troublesome, recall everyone, just post the notice, focus on the school, I think the victim should be a college student, but other occupations are not excluded." ”

Sun Jianguo nodded when he heard this: "Also, this is efficient, and there are not many universities in Songhai, so it is very easy to investigate." ”

I thought I wouldn't be able to leave again this time, but I heard Li Jun say again: "Xiao Xu, you go to have a meal first, and then go to check who has bought caustic soda in the last three months in several shops selling chemicals in the city. ”

After a hasty meal in the cafeteria, I immediately rushed to the archives room, found the police on duty to help me take a look, and found that there were two shops in Songhai City that allowed the sale of sodium hydroxide chemicals, one was Chen Wanda Chemical Store on Beiyang Road, and the other was Yonghe Commercial Bank on Jiangning Road.

Driving the car from the police station, I first found Chen Wanda's chemical store on Beiyang Road, identified myself, and asked according to the process: "Who has bought sodium hydroxide in your store in the past three months?" ”

The boss Chen Wanda spat at the spitting star in his hand, and said to me amicably while opening the account book: "Comrade policeman, you wait a minute, I'll find it for you." As long as you buy chemicals from me, you have to register, this is your regulation, and I have always enforced it. ”

After waiting for two minutes, the boss turned the ledger to me and said, "This is the information of the buyers who have purchased sodium hydroxide in the last three months. ”

There are always two buyers of sodium hydroxide in the account books, the first buyer's identity is registered as Guo Chao of the laboratory department of the city hospital, the purchase time is June 7, the use column says "cleaning container", the second buyer is Jin Weijia, a professor of chemistry at Songhai University, the time is June 19, and the use is written as "chemical reagent".

Both of them bought about the same amount, Guo Chao of the city hospital bought 4kg, while Jin Weijia of Songhai University bought a little more, with 4.6kg. I couldn't help frowning after reading it and asked, "Are these two people registered with ID cards?" Or did he report that you registered? ”

The owner of the store, Chen Wanda, hurriedly explained: "They are all registered with ID cards, I can be sure that the personal information on this is copied down by me on the ID card, as for the use of their own words, both of them are my old customers here, and they often come here to buy, so they should not be wrong." ”

I thought about it, and planned to copy the information first, and then go to the field to investigate the situation of the two people, thinking of this, I said to Chen Wanda: "Comrade, your account book may involve the physical evidence of a murder case, I'll bring it back to the bureau first, no problem, right?" ”

As soon as Chen Wanda heard that it involved a murder, he hurriedly pushed the account book to me: "Comrade policeman, if you need it, just take it, there is an account book in the store for accounting, and this is the registration information." ”

I nodded and took the account books back to the car, and after some consideration, I decided to go to another Yonghe trading firm that sells chemicals to check the situation, and finally investigate the situation of the buyers one by one.

Yonghe Commercial Bank is on Jiangning Road, when I was about to arrive by car, I suddenly found that the first corpse dumping site on Songhua Street and Zhongshan Street are next to each other, and the exit to the south of Songhua Street is Jiangning Road. Suppressing the doubts in my heart, I drove more than 100 meters on Jiangning Road, and I saw the shop that was filed in the bureau, Yonghe Commercial Bank.

As in the case of Chen Wanda's chemical store, I quickly saw the information I was looking for, and in the last three months, there was only one person who bought sodium hydroxide at Yonghe Commercial Bank, no, to be precise, Zhou's Paper. And in large quantities, a hundred kilograms.

After temporarily collecting the account book, I was about to drive to the city hospital to investigate the first purchaser, Guo Chao, but I received a call from Team Li as soon as I left.