Four people were injured on Friday (August 6) after a man with a knife ran amok on train in Tokyo, the Mainichi newspaper reported, citing unidentified police sources.
At about 2040 local time (1140 GMT) several people told police they had been stabbed while on a train on the Odakyu Odawara Line in the western part of the city, the paper said. What appeared to be a kitchen knife was left on the train, the Mainichi said.
The four injured people were conscious and their lives were in no danger. Tokyo police took a man believed to be the perpetrator into custody at around 1000 local time, according to the newspaper.
Police were not immediately available for comment.
Photos taken at the scene show police on the train and station barriers closed off by crime scene tape.
Violent crime is rare in Japan but there have been a spate of violent knife attacks by assailants unknown to the victims.
In June 2008, a man in a light truck drove into a crowd in the popular Akihabara district and then jumped out of the vehicle and started stabbing pedestrians, leaving seven dead.
(Production: Paul Warren, Marissa Davison)