|Sagamibara Knife Attack (Illustration Photo)|
Report says another 45 people are reported to have been injured in the attack, which happened in the early hours of Tuesday morning local time.
A suspect – a man in his 20s – has been arrested after handing himself in, police said.
He reportedly went into a police station and said “I did it”.
Sagamihara lies west of Tokyo, and is part of Kanagawa Prefecture.