Seeing that Mu Yan agreed to investigate the tomb robbery case, everyone said nothing more.
However, this tomb robbery case does not seem to be simple.
The tomb robbers were very careful. They did not leave fingerprints or footprints inside the tomb, nor did they leave anything like cigarette butts or lunch boxes outside the tomb.
It can be seen that this group of tomb robbers has a very strong sense of counter-reconnaissance.
Han Cheng decided to expand the search scope.
He didn't believe that these thieves could be cautious at all times. Maybe on the way up the mountain, they would relax their vigilance and leave some clues.
Han Cheng led the special case investigation team and the Hong County Criminal Investigation Team to conduct a blanket search on Zhisong Mountain.
Hard work pays off!
Han Cheng passed the smell skill.
A cigarette butt was found.
Fortunately, the forensic doctor extracted the DNA of the tomb robber suspect from the cigarette butts, and it was confirmed that it was the DNA of a male.
Unfortunately, there is no DNA information about this man in the police DNA database.
However, Han Cheng was not discouraged. He decided to use Y-STR detection technology to locate the suspect.
Y-STR detection technology, this professional term may sound very impressive, but in fact, the principle of this technology is not complicated.
Through Y-STR detection technology, male individuals who have a certain blood relationship with the Y chromosome in the suspect's DNA can be traced, and males of the ethnic group can be targeted.
To put it simply, through Y-STR detection technology, we can find the suspect’s distant relatives and men of the same ethnic group.
Soon, the forensic doctor used Y-STR testing technology and found that the suspect's DNA had a certain degree of blood connection with the Zhu family in Dong County, Liushi City.
In this way, Han Cheng and the others finally had a suspect for investigation.
However, the Zhu family is a big family in Dong County, with more than 5,000 male members.
How to find the suspect among these more than 5,000 people? This put the investigation team in a difficult position.
Someone proposed giving everyone a DNA test.
But some of the more than five thousand people are scattered throughout the Dragon Kingdom. It would be too time-consuming and laborious to find them one by one for DNA testing.
And doing so can easily alert grave robbers.
Han Cheng decided to use a clever method to collect DNA information of men in the Zhu family. He asked everyone to pretend to be staff of the Tobacco Bureau.
Then we carry out paid environmental activities to recycle cigarette butts in places where people named Zhu live.
Han Cheng and the others will register each person who brings cigarette butts one by one.
Soon, Han Cheng and the others received a large number of cigarette butts.
After forensics examined these cigarette butts and extracted DNA information, they finally made new discoveries.
After comparing the DNA data extracted from one of the cigarette butts with the DNA data of the tomb robber suspect, they found that the two were actually brothers.
If you find the brother of the tomb robber suspect, you are not far away from finding out the suspect's identity!
Soon, Han Cheng and the others found out from the tomb robber's biological brothers that he only had one biological brother named Zhu Fa.
It is clear.
Zhu Fa is the tomb robber suspect.
Through investigating Zhu Fa, Han Cheng and others learned.
Zhu Fa, fifty years old, is away from home all year round. No one knows what kind of work he does outside. It is always mysterious.
However, Zhu Fa comes back to see his wife and children once a month. Calculated by days, Zhu Fa should come back to see his wife and children in these days.
So Han Cheng asked plainclothes police to ambush near Zhu Fajia.
After everyone lay in wait for a day and at night, they found Zhu Fa's figure as expected.
He was carrying a big bag and looked around furtively, as if he was avoiding something.
As soon as he stepped into his home, he was caught by the police who were ambushing near his home. He tried his best to resist but to no avail.
Han Cheng and the others opened the big bag Zhu Fa was carrying and found that it contained cultural relics.
After expert appraisal from the Liushi Cultural Relics Bureau, those cultural relics came from stolen thousand-year-old tombs.
In front of the evidence, Zhu Fa made no excuses. He knew very well that tomb robbing was a serious crime.
And he was just a minor role in the tomb robbing gang, so he didn't need to take all the blame on himself.
So he confessed that the mastermind behind the theft of the thousand-year-old tomb was Wang Si.
There are eight people in their tomb-robbing gang, and the other seven are now in the border city of Xingshi. They plan to transport the stolen cultural relics out of Xingshi and sell them abroad.
Because Xingshi was not far from Liushi, he thought of going home to see his wife and children before joining the others and leaving the country.
But I didn't expect to be caught by Han Cheng and others.
It can only be said that Skynet is very sparse and does not leak out!
In order to prevent the other seven tomb robbers from noticing, Han Cheng asked Zhu Fa and the Wang Si gang to continue to maintain contact, and on the other hand asked the police in Xingshi to cooperate in arresting the Wang Si tomb robber gang.
Soon, the other seven members of Wang Si's tomb robbing gang were all arrested by the Xingshi police and transferred to the Liushi Police Station.
After interrogation, Wang Si and his group confessed to the fact that they had robbed the tomb.
It turns out that Wang Si's tomb robbing gang is the famous Heifeng tomb robbing gang in the tomb robbing world.
They commit crimes all over the country, but have never been caught, because this tomb robbery gang is secretive and cunning. They often change places with one shot, and every time they finish robbing a tomb, they can escape smoothly and never show their faces.
So no one has ever known the true identities of these people.
After the ancient tomb theft was solved and the stolen cultural relics were recovered, the leaders of Guangxi Province greatly praised the special case investigation team, and especially praised Han Cheng alone.
However, Muyan did not take the credit, but gave all the credit to Han Chengshi.
Although solving the tomb robbery case is worthy of celebration, Han Cheng did not relax because the detection of the tomb robbery case was only the beginning of the investigation into the case of the unknown female corpse.
Han Cheng had a hunch that the case of the unknown female corpse might be harder to solve than the tomb robbery case!
Liushi Prison.
Han Cheng interrogated Wang Si alone.
Han Cheng interrogated Wang Si alone because he was the leader of the tomb robbing gang and the first of the eight to enter the ancient tomb.
He should be the one among the eight who knows best what the state of the ancient tomb was before it was destroyed.
"Wang Si, after you entered that ancient tomb, did you find anything unusual about that ancient tomb? In other words, did you find any traces that someone had entered the ancient tomb before you entered it?" Han Cheng said directly Ask Wang Si.
Wang Si was obviously a little surprised when he heard Han Cheng ask this.
"Officer, how do you know that someone has entered that tomb before me?"
"Because there was a murder in the ancient tomb. The person lying in the sarcophagus is not the owner of the tomb, but a modern person who has only been dead for more than ten years!"
"Officer, since you have discovered the abnormality of the corpse, I might as well tell you everything!"
