Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Anatomy room.

The forensic doctor held the nails taken out from Zhao Kai's body and sighed.

The four corpses were dissected by these two forensic doctors, and each of them had a nail driven into their head.

"Is the other party quite superstitious?"

Chen Jiang held the nails and observed them for a long time. What was certain was that the nails driven into Zhao Kai's head were the same size as the corpses in the previous three sentences.

Just ordinary iron nails.

"Who knows what's going on, but there are rumors here that this kind of nail can suppress the souls of the dead, but that's all superstitious."

"It's up to Captain Gao and others to study this matter."

Chen Jiang and two other forensic doctors from the BZ City Criminal Investigation Detachment were right. Gao Xiang was indeed studying this matter.

In the conference room, Li Donglin, Gao Xiang, Lu Chuan and several other members of the serious crime team were present.

It was already in the afternoon, and the Provincial Technical Identification Center also sent over the trace evidence identification and analysis results.

"Lu Chuan, you should report first."

Li Donglin has always paid a high degree of attention to the current survey.

Moreover, Lu Chuan has never let him down, playing a major role in the investigation of many cases.

It can be said that the serious crime team has maintained a 100% investigation rate of successful investigation of all cases, and Lu Chuan is indispensable.

"Yes, Li Chu!"

Lu Chuan's eyes were also red.

After arriving in BZ City yesterday morning, I haven't had any rest. Until this afternoon, I didn't sleep for 27 or 8 hours.

Although his body was very tired, Lu Chuan's spirit was relatively high.

After receiving the footprint model sent over by Luo Qiang this morning, Lu Chuan conducted a detailed identification analysis and compared it with the half-bare foot footprint found on the sink at the crime scene.

Many valuable clues were obtained, and the physical characteristics of the suspect were probably locked.

In addition, after identifying the footprints in the morning, Lu Chuan asked Wang Hao and others from the BZ City Criminal Investigation Detachment to take him to the first three crime scenes.

After the second on-site investigation, some valuable clues were also collected.

Although it has not yet been time to do a complete technical appraisal, Lu Chuan already has some sketches.

"First of all, let me report on the fingerprint identification analysis collected at the crime scene."

"The murderer probably wore gloves during the entire crime and was very careful and did not leave fingerprints."

The BZ City Criminal Investigation Detachment has long expected this.

No clear fingerprints were found at the first three crime scenes, so it is impossible to leave such a flaw at the fourth crime scene.

"Secondly, we found some blood stains in the sink at the crime scene, and the murderer cleaned it at the sink."

"Some trace evidence was recovered from the sewer. The provincial department conducted a technical appraisal overnight last night. Let's take a look at the test results."

What appeared on the projector were multiple photos and technical appraisal reports.

"The blood stains inside the sink were identified as belonging to the victim Zhao Kai himself."

"The dander and hair found inside identified DNA samples from three individuals."

"One of them belongs to Zhao Kai himself, the other is his wife Li Guifen, and the third person..." Lu Chuan operated the projector to display a separate report.

"The system comparison did not find this person's DNA sample information."

"I asked our colleagues from the BZ City Criminal Investigation Detachment. From what we have learned so far, Zhao Kai and Li Guifen live alone, and there are generally no outsiders in the house."

Li Donglin and others were very excited after hearing this news.

"Left by the murderer?"

"Probably!"

"It should have been left by the murderer. Zhao Kai and Li Guifen's children have never been to this house after celebrating the New Year or after they got married."

"The DNA sample of the third person left behind must belong to the murderer."

Li Donglin looked at Lu Chuan with burning eyes. Although the DNA sample information has not yet been compared in the system, as long as there is this clue, the suspect can be locked after determining the scope of the suspect!
"Are there any other clues?"

Lu Chuan nodded: "Yes, today I went to the first three crime scenes and carefully inspected the washbasins and bathrooms at the scene. I obtained some sample evidence and have sent them to the Provincial Technical Identification Center. Tomorrow night at the latest You can feed back the results.”

"If similar DNA sample information can be found at the other three scenes, then it can be determined that the person to whom this DNA sample belongs is the murderer."

"it is good!"

Although Li Donglin had high hopes for Lu Chuan, he did not expect that his side would achieve such a big breakthrough.

But Lu Chuan's report was not over yet: "In addition to this clue, I found half a naked foot footprint on the floor of the sink at the crime scene where Zhao Kai was murdered."

Half a footprint?

Lu Chuan adjusted the projector and what appeared was a pair of slippers.

"After the murderer killed the people at the crime scene, he did not treat the ground. All the shoe prints on the ground were from slippers."

"This means that there are two clues. The first is that the murderer and the victim should know each other, otherwise the other party would not be able to enter the victim's house wearing slippers."

"Second, when we inspected the crime scene, we did not find any blood stains on the slippers, so I guess the other party must have cleaned the blood stains on the slippers and confirmed through reagent testing that the slippers were worn by the other party."

On the projector, it was the slippers with blood stains that Lu Chuan found at the door.

"The other party was cleaning the slippers on the sink. The other party was actually more cautious. He should have cleaned the slippers one by one so that his footprints would not be left on the ground."

"But when changing the slippers, it was impossible for the other party to keep both feet on the slippers forever, so we still found the footprints of half a bare foot."

"In addition, Luo Qiang's people found traces on the wall and a series of footprints found outside the wall. I conducted a comparison and identification here."

"It can be confirmed that what is outside the wall is indeed left by the murderer, and the other party entered the community by climbing over the wall."

"Through these footprints, it was determined that the male murderer was between 1 meters and 81 meters tall."

"The weight is about 75 to 80 kilograms, the age is 40 years old, and the error is not more than 2 years old."

"In addition, the opponent's arms are slightly longer than those of normal people."

Lu Chuan adjusted the projection, and what appeared were several pictures of dripping blood.

"This is the drop-type blood stain I collected at the crime scene."

"Generally speaking, the length of a normal person's arm is about 2/5 of the height, but based on the dripping blood stains, the height of the opponent's hanging arm is about 85 centimeters."

"For a person who is about 1 meters tall, the hanging arm height should be around 8. The other person's arms are longer than the average person's." (End of Chapter)