After the group determined the direction of the subsequent investigation, they set off directly to the deceased's home.
After arriving at the deceased's home, a group of forensic examiners went to the deceased's kitchen and turned over the food table and fresh garbage in the deceased's home.
These residues are disgusting, but they are the focus of scientific research, and there is nothing we can do about it for the sake of work.
"Senior, look at this."
Nanatsuki Koshizui in the living room waved, and when Karasawa walked over, he handed Karasawa a small ticket.
"This is a medicine for diarrhea and abdominal pain."
Tangze looked at several boxes of medicine on the table: "It seems that the deceased had bought medicine on Monday, and he was already feeling sick at that time."
"Yeah, it's a pity that he didn't realize that he was poisoned." Koshimizu Nanatsuki said regretfully: "Otherwise, maybe there is still hope."
"Take all these medicines away and check your fingerprints." Hearing Koshizui Nanatsuki's words, Karasawa shook his head and immediately ordered.
"We also found something here." Miwako Sato held a water glass and said, "There are lipstick marks on it. There are women coming in and out of this room."
"Then maybe this medicine was bought for him by a woman." Koshimizu Nanatsuki guessed.
"Anyway, first extract the fingerprints and the lip lines on the glass." Tang Ze said: "The way of poisoning was poisonous mushrooms, so it must have been done by someone around you.
In addition, all the utensils in the deceased's room were collected and taken back for analysis. Maybe we can find which utensil contained the poisonous mushrooms."
Everyone quickly got busy. After entering all the fingerprints of some important items in the room, they began to enter the lip prints.
Many people don't know that lips also have "fingerprints", because everyone's lip lines will also remain unchanged throughout their lives.
Because Karasawa took the place of Officer Megure this time, he did not leave after collecting evidence. Instead, he asked Nanatsuki Koshimizu to return to the scientific search and research department with physical evidence clues and some personnel for identification.
As for him, he, Takagi and others continued to visit and investigate.
"Takagi, did you find anything over there?"
Because Karasawa was organizing scientific research and evidence collection before, while Takagi and others went to the property to inquire about the situation, so after Karasawa met with him, he took the lead in asking about their investigation findings.
"An important discovery has been made."
Takagi said: "After we went downstairs, we found promotions for property activities posted on the wall.
Looking at the time, it is an event held on Sunday to promote friendly relations between neighbors.
And everyone who participates can receive a bowl of mushroom soup."
"mushroom soup!?"
Hearing this, Tang Ze immediately asked: "Can you tell me more about your investigation in detail?"
"We asked the person in charge of the property management, and they said that they set up a tent in the open space of the community to cook, and prepared a total of 120 people."
Officer Takagi said: “All the mushroom soup has been distributed, and I didn’t feel sick after eating it.
As for the mushroom soup, it was made at the community gathering center."
"The soup should be made together, but only Iwai Yoshiki's soup is poisonous?"
Tang Ze touched his chin and muttered: "There is no mass poisoning incident, which means that there is a high probability that someone deliberately mixed poisonous mushrooms into his mushroom soup in order to kill him."
"That's what we thought at the time."
Sato Miwako nodded and said: "So at that time, I asked the property manager to call the three people responsible for making mushroom soup at this event. They should be here immediately."
Tangze nodded when he heard this. After the three of them waited for a while, Mr. Dijing, the property manager of the community, led the three women over.
"This is Miss Fukumoto, Yoshino and Hirokawa who are responsible for making mushroom soup at the event." The person in charge introduced the three people and said: "They are this year's community neighborhood committee members."
"Excuse me, has this person participated in community activities?"
Takagi took out a photo of Iwai Yoshiki and showed it to the three of them.
Taking advantage of the opportunity for the three of them to look at the photos, Tang Ze also looked at the three of them.
The first is Masako Fukumoto. She is a woman with short hair. She looks to be in her fifties, but she is in good spirits.
The second person, Yoshino Mirei, is a woman in her thirties. She has medium-long hair, is good-looking, and looks gentle and gentle.
As for the last one, Rena Hirokawa is a lady with a ponytail, but she looks much younger, about twenty years old, and she probably got married not long ago.
Seeing the three people in front of him, Tang Ze looked a little weird, because this time it was obviously a branch line, but three suspects came at once.
Is this going to be a "choose one of three classics"?
Tang Ze suppressed this weird thought, put aside this preconceived idea, and investigated the case carefully.
While Karasawa was thinking wildly, the three women also looked at Iwai Yoshiki
photos, but they all shook their heads and said that they had never seen Iwai Yoshiki.
"Then, can you let me collect everyone's fingerprints?" Tang Ze looked at the three of them and said.
“We just made the usual mushroom soup.”
After hearing what Tang Ze said, Mrs. Fuyuan defended herself eagerly: "It has nothing to do with us!"
"yes."
"It's just a confirmation of the normal process, thank you for your cooperation." Karasawa bowed slightly, followed closely by Takagi and Miwako, and the three of them had no choice but to agree.
After all, the criminal department has asked you politely, and if you continue to refuse without knowing what is right, it will definitely attract their attention.
So the three of them could only start pressing the fingerprints of their ten fingers on the fingerprint paper under the guidance of Sato Miwako.
Takagi looked at Mr. Dijing and said, "May I ask where you bought the mushrooms?"
"The mushroom soup consists of four kinds of mushrooms, all delivered by nearby fruit and vegetable stores, and then the three of us cooked them in the activity center."
"I remember that Mrs. Ueda seemed to be there at that time." Mr. Tsui said this and looked at the three of them to confirm: "She should be here, right?"
"Yeah, but Mrs. Ueda said she wanted to go to the hospital and left." Mrs. Fuyuan turned her head and said, "She said her eyes were itchy and uncomfortable, and then she went to the hospital."
"That person is always like this. He leaves all the work of the committee to us, and then sneaks away to enjoy himself." Mrs. Yoshino couldn't help complaining: "That person must be pretending."
"But she looks really uncomfortable and her eyes are a little red." Masako Fukumoto explained helpfully.
"Even if I felt unwell and went to the hospital, I wouldn't have stayed there for a whole day." Rena Hirokawa said dissatisfiedly, "I still haven't come back until the final cleaning."
It can be seen that there are quite a few people who are dissatisfied with this lazy "Mrs. Ueda".
However, these could only be regarded as neighbor conflicts at best, so Tang Ze and others tried to dissuade them and asked some questions related to the case. After confirming that they had gained nothing, they returned to the scientific search and research.
Koshizui Nanatsuki and others, who came back early, have already tested all the collected evidence.
Finally, they detected the ingredients of poisonous mushrooms on a disposable plastic bowl.
Moreover, there was a fingerprint on their utensils that was not that of the deceased.
At the same time, after comparison, this fingerprint was consistent with the fingerprint on the cup with the lip pattern.
In other words, the woman who left lip lines on the cup is very suspicious!
"Besides these two things, is there anything else with this woman's fingerprints on it?" Tangze asked.
"There's a contact lens case."
After Koshizui Nanatsuki looked at the information handed to her by her subordinates, she said, "But no contact lenses were found in it.
In-depth laboratory results will take some time."
"Um."
After listening to Koshimizu Nanatsuki's report, Karasawa looked at Shiratori and Chiba on the side: "You are responsible for the place where the deceased worked. Are there any new clues?"
"After we went to the English class, we learned that the other party had a girlfriend named Yuka Shiotani."
Chiba said: "But the other party has broken up with the deceased and has a foreign boyfriend.
The other party said that he had never met the deceased, and the class time was deliberately delayed."
"But we got this."
Shiratori took out the paper cup from the evidence bag and said, "This was left behind before she left after class. Although it was not a legitimate collection, let's compare it with the fingerprints in the deceased's room."
"Good job." Tang Ze nodded and immediately called the fingerprint scanner to collect fingerprints.
With today's advanced instruments, fingerprints on places like cups can basically be scanned by shining a light on them in a dark environment and scanning them with an instrument.
Of course, the same goes for lip lines.
The comparison results came out quickly. The lip prints and fingerprints of Shiotani Yujia were inconsistent with the lip prints and fingerprints of the cup at the deceased's home.
However, something was still gained.
Although Yuka Shiotani was not the woman who drank the water at the deceased's home, her fingerprints were found on the receipts and medicine boxes used to treat diarrhea.
In other words, the other party lied. Shiotani Yuka did not see the deceased again after the breakup, but bought medicine for the other party after the deceased ate poisonous mushrooms.
After learning about this situation, Shiratori and Chiba quickly set out again to confront Yuka Shiotani.
But this time, Shiotani Yuka had no way to quibble in the face of the evidence.
And perhaps because her boyfriend was not around, Shiotani Yuka didn't care anymore and immediately nodded and admitted that she bought those medicines.
Because at that time I still couldn't let go of Iwai Yoshiki.
The reason why it happened at that time was because when Shiotani Yuka was delivering medicine to him, he saw the cup stained with lipstick.
No matter how beautiful Iwai Yoshiki's love story was at that time, it couldn't compare to the chilling feeling caused by discovering that detail.
But after all, they had dated before. When he asked Shiotani Yuka if he had any clues about the woman in his house, the other party did provide a point worthy of investigation.
That's how Yoshiki Iwai met so many women, perhaps through trial lessons in English classes.
At that time, she met him in a free class and started dating.
Following the clues provided by the other party, they asked for a free trial form of the English conversation class, and finally discovered a surprising clue after investigation.
Among the three people who made mushroom soup, the youngest Hirokawa Rena had actually gone to an English class to take free lessons.
This was a big discovery. Considering that the two of them had been running around for so long, Karasawa did not let them continue the investigation. Instead, he took Takagi to confront Reina Hirokawa.
Faced with the evidence, Reina Hirokawa admitted: "I'm sorry, I lied at that time."
"Because"
Before Takagi could finish speaking, Hirokawa Rena interrupted him: "It's just what you think.
That’s why I didn’t dare to admit it at the time, otherwise I would be doomed.”
"Did you meet Iwai on the day of the community event?" Karasawa asked.
"No!"
Hirokawa Rena shook her head: "We haven't seen each other in the past few days. My husband recently came back from a business trip and is resting at home. There is no way to see him."
After hearing Rena Hirokawa's words, the two looked at each other and felt that the other was not lying.
Because this lie can be exposed at a glance, and she is also afraid that her husband will find out about her cheating, let alone lie.
"The deceased was really carefree."
Takagi said helplessly: "I seem to have found clues, but after checking, they all turned out to be lovers."
Looking at Takagi's depressed expression, if he had a different temper, he would probably have cursed on the spot.
After all, this girl is too carefree. It's a bit too much to seduce someone who has been married even if she is so carefree.
But precisely because of this, he might have been poisoned because of the chaotic relationship between men and women.
Although they have now found the woman who had an affair with the deceased, they still have not found the real owner, and even the clues have been cut off.
However, just when Karasawa and the two were about to return to scientific research, Koshimizu Nanatsuki suddenly called.
"Senior, you haven't left, have you?" Koshimizu Nanatsuki asked urgently.
"No, it's still in the apartment." Tangze said, "What's wrong? Did you find anything?"
"The test results of that contact lens case are out."
Koshizu Nanatsuki said: "The fingerprints on it belong to the woman who left the lip print, and after checking the contact lens protective solution, I found that there were a lot of bacteria growing in it.
If you don't pay attention to the hygiene of contact lenses, there will be this kind of bacterial infection in them.
Wearing such contaminated contact lenses will infect the cornea."
"I remember that the autopsy report showed that there were no signs of infection in the eyes of the deceased." Tangze said, "Then, this contact lens belongs to that woman."
At this point, Tang Ze paused: "Wait a minute, I remember when I asked, there were originally four people making mushroom soup, and one of them went to the hospital with the excuse of uncomfortable eyes."
"That's right, so Mrs. Ueda is very suspicious. I realized this, so I called you, senior."
Nanatsuki, who was on the other end of the phone, smiled and sighed: "But senior, you reacted too quickly, which makes me feel no sense of accomplishment."
"Anyway, this information came in time. It prevents us from making another trip. Let's go find her now."
After Tangze hung up the phone, he walked over and told Takagi the general situation, then went to the property again and found the person in charge.
After asking about Mrs. Ueda's basic situation, the two went directly to the game arcade where the other worked to find Eiko Ueda.
Because the place where she worked was very close to the Metropolitan Police Department, she simply invited her back and cooperated with the inspection.