World · East Asia & Pacific · 2 hrs ago
Japan Supreme Court overturns acquittal in fatal Inawashiro Lake boat crash
Japan’s Supreme Court overturned the boat operator’s acquittal and upheld a two-year prison sentence.
Six years ago, a pleasure boat hit three people in Lake Inawashiro, Fukushima Prefecture, killing an 8-year-old boy and seriously injuring his mother and another person.
The operator, Tsuyoshi Sato, was charged with causing death and injuries through professional negligence.
A lower court found him guilty, but an appeals court acquitted him, saying he could not have spotted the people in time to avoid the collision.
The Supreme Court said boat operators in that area should expect people to be in the water and check whether visible objects are people.
The original guilty verdict and sentence now stand, ending the case with a conviction.
The boy’s family said the six-year wait had been long and that they were relieved by the result.
Japan’s Supreme Court overturned an acquittal in a fatal 2020 boat crash on Lake Inawashiro and upheld the trial court’s two-year prison sentence.
The crash killed an eight-year-old boy and seriously injured two other people.
The court said boat operators in the area should anticipate people could be in the water and check whether floating objects are people.
The boy’s family said the six-year case had been difficult but welcomed the result.
The defendant’s lawyer called the ruling severe and said the court had effectively rescued what the lawyer described as a flawed investigation.
- Who
- Former company executive Tsuyoshi Sato, who was operating the boat, was prosecuted. An eight-year-old boy died and two people were seriously injured.
- What
- The Supreme Court overturned Sato’s acquittal and upheld a two-year prison sentence for professional negligence causing death and injury.
- When
- The Supreme Court ruled on October 16, 2026. The crash happened six years earlier, on September 6.
- Where
- Lake Inawashiro, Fukushima Prefecture, Japan.
- Why
- The court said operators should anticipate people in the water in that area and check whether floating objects are people.
Supreme Court
Sato’s defense lawyer
Negligence
Supreme Court
The court said operators had a duty to check whether floating objects were people in an area where people could be present.
Sato’s defense lawyer
The lawyer said the ruling effectively rescued what the lawyer called a flawed investigation.
Finding the people
Supreme Court
The court said the second-instance findings did not establish that the trial court’s finding of negligence was unreasonable.
Sato’s defense lawyer
The lawyer described the ruling as severe.
A boat struck three people in Lake Inawashiro, killing an eight-year-old boy and seriously injuring two others.
The Fukushima District Court sentenced Sato to two years in prison.
The Sendai High Court overturned the conviction and acquitted Sato.
The Supreme Court held oral arguments before reviewing the acquittal.
The Supreme Court overturned the acquittal and upheld the two-year prison sentence.
- Victim
- Eita Toyoda, aged 8
- Other injured people
- 2
- Crash location
- Lake Inawashiro, Fukushima Prefecture
- Trial court sentence
- 2 years in prison
- Supreme Court ruling
- October 16, 2026
- Supreme Court chief justice
- Junichi Takasu
3 sources
What people are saying
The acquittal must be overturned, or it would be manifestly contrary to justice
Six years was a long time, and honestly there were many times when we gave up, felt distrustful, or became fed up. But we got through it, and we are glad about today’s result
From my position, I have no choice but to see this as the court rescuing a shoddy investigation. It is a simple point, but I think this is a very severe judgment