A Japan man dying in woman toilet pipe
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The Deadly U-Shaped Pipe: Japan's Most Bizarre Locked-Room Death Case, a 30-Year-Old Unsolved 36-Centimeter Survival Space
This case is arguably one of the most well-known unsolved mysteries on the internet. Even if many readers haven't heard the name of the case, they've likely seen this image.
The image appears to show a person curled up in a narrow pipe. He wasn't practicing yoga or contortionism, nor was he repairing anything inside—it's a diagram illustrating the discovery of a body in a woman's toilet pipe.
This case occurred in Japan thirty years ago. After a brief investigation, the police quickly concluded it was an "accidental death." Local residents protested the police's hasty closure, even petitioning for a reinvestigation, but to no avail. I believe the police's reluctance to reopen the investigation is inextricably linked to the case's bizarre and grotesque nature, and the truth behind it has been buried by the tides of time…
The incident occurred on February 28, 1989, in Tamura District, Fukushima Prefecture, where the cold winds carried the chill of early spring. A female teacher in Fukushima returned to her dormitory after work and found a men's leather shoe floating deep in the toilet bowl. As she shakily lifted the heavy cast-iron manhole cover, a pair of bluish-purple ankles were right in front of her eyes.
After hoisting it out, the police tried many methods but still couldn't pull the person out. Finally, they had to use tools to break down the entire pipe before they could finally get the person out. The person hiding in the pipe was undoubtedly already dead. After the police conducted a preliminary cleaning of the scene with water, they discovered something strange—the person was shirtless, clutching a neatly folded coat. Moreover, his posture was extremely bizarre; he was curled up in a ball, perfectly trapped in the pipe, with almost no room to move.
The scene and autopsy results are as follows: The deceased was Naoyuki Kanno, male, 26 years old, date of death February 26th, cause of death "frostbite and chest circulation disorder," simply put, he froze to death. The body was found inside the pipe with legs curled up, upper body naked, clutching its own shirt, and a shoe belonging to the deceased on top of its head.
The last person to see Naoyuki Sugano was his father. Around 10:00 AM on the 24th, Sugano's father was watching TV in the living room when he heard his son say, "I'm going out for a bit," from the entryway, followed by the sound of the door closing and leaving. He never saw his son again. In other words, Sugano's whereabouts had been unknown since the 24th.
By the evening of the 25th, Sugano's parents realized their son hadn't returned home and began to feel uneasy. The next morning, they called some of Sugano's friends to ask if they had seen him, but received no useful information. Then, on the 27th, the day before Sugano's body was discovered, someone found his car in the agricultural cooperative's parking lot.
01. Numerous Suspicious Points
This case is full of suspicious points. First, according to everyone who had contact with the deceased, he was a positive, cheerful, and helpful person, certainly not the kind of "pervert" who would peep on women using the restroom.
Secondly, the toilet pipes were extremely narrow; even the removal of the body required mechanical cutting, making entry difficult under normal circumstances, and exit even more difficult once inside. Given such a high risk, why did the deceased insist on entering? If it was homicide, how did the killer manage to stuff the body into the pipes and keep it in a curled-up position?
Furthermore, the deceased's posture is puzzling. At the time of death, the deceased was shirtless, clutching his clothes. This raises serious questions. Why would he remove his clothes in such low temperatures? If simply worried about soiling them, why not leave them outside instead of holding them inside?
Furthermore, the village where the deceased lived was undergoing elections. According to insiders, the deceased campaigned for the village chief, but withdrew after discovering some secrets. Some speculate he was targeted during the election.
Furthermore, the deceased worked at a nuclear power plant, which recently experienced a major accident. Naoyuki Sugano, as the head of the nuclear power plant maintenance company, also participated in the investigation. On January 6th, the accident was discovered during a routine investigation involving Naoyuki Kanno. Two days prior, a staff member working with Kanno on the investigation had committed suicide, leading to speculation that the deceased knew some inside information about the accident and was murdered to cover it up.
Besides the power struggles and social ills surrounding nuclear power, another possible killer lurked in Kanno's inner circle.
Ms. Tanaka, the first person to discover the murder, was an acquaintance of Kanno, and her fiancé was also a friend of his. In the period leading up to the incident, Ms. Tanaka had been harassed by unsolicited phone calls. She asked her fiancé for help, who in turn contacted Kanno. Together, they devised a plan: they installed a recording device on Ms. Tanaka's phone, ultimately recording the perpetrator's voice. Kanno then sent the recording to the police, but the local police, adhering to the principle of avoiding trouble, considered such a victimless stalking case unworthy of attention. The fiancé and Kanno were left to continue their investigation on their own.
According to the testimony of a junior from the same village, Sugano, he had mentioned the incident to this junior, claiming, "I already know who made the harassing calls." However, when the junior pressed for more information, Sugano refused to reveal any further details, only saying that he would handle it. Because everyone trusted Sugano's abilities, the junior didn't pursue the matter further.
At a youth association gathering on the 23rd, before Sugano's disappearance, another junior from the same village offered him a drink, but Sugano politely declined, saying he "had an appointment to meet someone the next day," without specifying who. This led some to speculate that he might have found the culprit behind the harassing calls and decided to settle the matter privately, only to be attacked and trapped to death in the toilet pipe.
02. After investigation, the police quickly ruled out homicide. The pipe was too narrow to allow the body to be placed in that position, and there were no external injuries or toxic substances detected on the body. Therefore, the police determined it to be an accidental death.
The deceased had crawled into the drainpipe in an attempt to spy on a female teacher using the restroom, but unexpectedly became trapped and unable to move, ultimately freezing to death.
Regardless of the truth, the villagers could not be appeased by a simple explanation: "He got stuck in the toilet while spying on women and died." A month after the incident, the village of Dulu collected opinions from over 4,300 villagers and jointly petitioned the Sanchun Police Station, requesting a reopening of the investigation. Considering the village's population is less than 10,000, this means at least half the villagers questioned the conclusion of accidental death. However, the police believed that no new evidence had been found (police negligence led to a lack of evidence), and the existing evidence was insufficient to prove homicide, therefore rejecting the villagers' application. To this day, the official conclusion in this case remains accidental death.
Now, even if they wanted to reopen the investigation, they could not find any more evidence.
Years later, the case was hastily closed in this manner, becoming a famous unsolved mystery in history.
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