Violent crime is relatively rare in Japan, which has a low murder rate and some of the world’s toughest gun laws.
However, there are occasional stabbing attacks and even shootings, including the assassination of former Prime Minister Shinzo Abe in 2022.
In December last year, 14 people were injured in a stabbing attack in a factory in central Japan during which an unspecified liquid was also sprayed.
Japan remains shaken by the memory of a major subway attack in 1995 when members of the Aum Shinrikyo cult released sarin gas on trains, killing 14 people and making more than 5,800 ill.
On 20 March 1995, five members of the Aum cult dropped bags of Nazi-developed sarin nerve agent inside morning commuter trains, piercing the pouches with sharpened umbrella tips before fleeing.